diff --git a/docs/pom.xml b/docs/pom.xml
index d27a69d5a..60527ff37 100644
--- a/docs/pom.xml
+++ b/docs/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 	<packaging>pom</packaging>
 	<name>Spring Cloud Function Docs</name>
diff --git a/pom.xml b/pom.xml
index f6bfe5acc..ba2b87556 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,18 +6,18 @@
 
 	<artifactId>spring-cloud-function-parent</artifactId>
 	<name>Spring Cloud Function Parent</name>
-	<version>3.2.0-SNAPSHOT</version>
+	<version>4.0.0-SNAPSHOT</version>
 	<packaging>pom</packaging>
 
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-build</artifactId>
-		<version>3.1.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
 	<properties>
-		<java.version>1.8</java.version>
+		<java.version>17</java.version>
 		<maven.compiler.source>${java.version}</maven.compiler.source>
 		<maven.compiler.target>${java.version}</maven.compiler.target>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
@@ -48,8 +48,16 @@
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-checkstyle-plugin</artifactId>
 			</plugin>
+			<plugin>
+		       <groupId>org.apache.maven.plugins</groupId>
+		       <artifactId>maven-surefire-plugin</artifactId>
+		       <configuration>
+		            <argLine>--add-opens java.base/java.util=ALL-UNNAMED</argLine>
+		       </configuration>
+		     </plugin>
 		</plugins>
 		<pluginManagement>
+			
 			<plugins>
 				<plugin>
 					<groupId>org.codehaus.mojo</groupId>
@@ -129,18 +137,18 @@
 	</reporting>
 
 	<profiles>
-		<profile>
-			<id>java11+</id>
-			<activation>
-				<jdk>[11,)</jdk>
-			</activation>
-			<dependencies>
-				<dependency>
-					<groupId>javax.annotation</groupId>
-					<artifactId>javax.annotation-api</artifactId>
-				</dependency>
-			</dependencies>
-		</profile>
+<!-- 		<profile> -->
+<!-- 			<id>java11+</id> -->
+<!-- 			<activation> -->
+<!-- 				<jdk>[11,)</jdk> -->
+<!-- 			</activation> -->
+<!-- 			<dependencies> -->
+<!-- 				<dependency> -->
+<!-- 					<groupId>javax.annotation</groupId> -->
+<!-- 					<artifactId>javax.annotation-api</artifactId> -->
+<!-- 				</dependency> -->
+<!-- 			</dependencies> -->
+<!-- 		</profile> -->
 		<profile>
 			<id>core</id>
 			<modules>
diff --git a/spring-cloud-function-adapters/pom.xml b/spring-cloud-function-adapters/pom.xml
index aad724969..e78de8ad4 100644
--- a/spring-cloud-function-adapters/pom.xml
+++ b/spring-cloud-function-adapters/pom.xml
@@ -10,7 +10,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<name>spring-cloud-function-adapter-parent</name>
diff --git a/spring-cloud-function-adapters/spring-cloud-function-adapter-aws/pom.xml b/spring-cloud-function-adapters/spring-cloud-function-adapter-aws/pom.xml
index 5d6b09cdb..7c47ab30a 100644
--- a/spring-cloud-function-adapters/spring-cloud-function-adapter-aws/pom.xml
+++ b/spring-cloud-function-adapters/spring-cloud-function-adapter-aws/pom.xml
@@ -13,13 +13,12 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-adapter-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>1.8</java.version>
 		<aws-lambda-events.version>3.9.0</aws-lambda-events.version>
 		<aws-java-sdk.version>1.12.29</aws-java-sdk.version>
 		<aws-kinesis-deaggregator.version>1.0.3</aws-kinesis-deaggregator.version>
diff --git a/spring-cloud-function-adapters/spring-cloud-function-adapter-azure/pom.xml b/spring-cloud-function-adapters/spring-cloud-function-adapter-azure/pom.xml
index 6e1edb689..fed34cf64 100644
--- a/spring-cloud-function-adapters/spring-cloud-function-adapter-azure/pom.xml
+++ b/spring-cloud-function-adapters/spring-cloud-function-adapter-azure/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-adapter-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<properties>
diff --git a/spring-cloud-function-adapters/spring-cloud-function-adapter-gcp/pom.xml b/spring-cloud-function-adapters/spring-cloud-function-adapter-gcp/pom.xml
index 74b81f066..091a93738 100644
--- a/spring-cloud-function-adapters/spring-cloud-function-adapter-gcp/pom.xml
+++ b/spring-cloud-function-adapters/spring-cloud-function-adapter-gcp/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<artifactId>spring-cloud-function-adapter-parent</artifactId>
 		<groupId>org.springframework.cloud</groupId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<properties>
diff --git a/spring-cloud-function-adapters/spring-cloud-function-adapter-openwhisk/pom.xml b/spring-cloud-function-adapters/spring-cloud-function-adapter-openwhisk/pom.xml
index 4dfd38fc2..149ca38b5 100644
--- a/spring-cloud-function-adapters/spring-cloud-function-adapter-openwhisk/pom.xml
+++ b/spring-cloud-function-adapters/spring-cloud-function-adapter-openwhisk/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-adapter-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<dependencies>
diff --git a/spring-cloud-function-adapters/spring-cloud-function-grpc-cloudevent-ext/pom.xml b/spring-cloud-function-adapters/spring-cloud-function-grpc-cloudevent-ext/pom.xml
index 20fe0204d..9853012bb 100644
--- a/spring-cloud-function-adapters/spring-cloud-function-grpc-cloudevent-ext/pom.xml
+++ b/spring-cloud-function-adapters/spring-cloud-function-grpc-cloudevent-ext/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-adapter-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>spring-cloud-function-grpc-cloudevent-ext</artifactId>
 	<name>spring-cloud-function-grpc-cloudevent-ext</name>
diff --git a/spring-cloud-function-adapters/spring-cloud-function-grpc/pom.xml b/spring-cloud-function-adapters/spring-cloud-function-grpc/pom.xml
index df7476029..bec41efae 100644
--- a/spring-cloud-function-adapters/spring-cloud-function-grpc/pom.xml
+++ b/spring-cloud-function-adapters/spring-cloud-function-grpc/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-adapter-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<properties>
diff --git a/spring-cloud-function-compiler/pom.xml b/spring-cloud-function-compiler/pom.xml
index 08bdf7707..3592c6a23 100644
--- a/spring-cloud-function-compiler/pom.xml
+++ b/spring-cloud-function-compiler/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<dependencies>
diff --git a/spring-cloud-function-context/pom.xml b/spring-cloud-function-context/pom.xml
index b25a2c006..fb79aec29 100644
--- a/spring-cloud-function-context/pom.xml
+++ b/spring-cloud-function-context/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<properties>
@@ -47,6 +47,16 @@
 			<artifactId>jackson-module-kotlin</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency> 
+			<groupId>javax.annotation</groupId>
+			<artifactId>javax.annotation-api</artifactId>
+			<version>1.3.2</version>
+		</dependency>
+		<dependency>
+		    <groupId>javax.activation</groupId>
+		    <artifactId>javax.activation-api</artifactId>
+		    <version>1.2.0</version>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-configuration-processor</artifactId>
diff --git a/spring-cloud-function-context/src/test/java/org/springframework/cloud/function/context/catalog/BeanFactoryAwarePojoFunctionRegistryTests.java b/spring-cloud-function-context/src/test/java/org/springframework/cloud/function/context/catalog/BeanFactoryAwarePojoFunctionRegistryTests.java
index 3f0910bb2..accc4c5ba 100644
--- a/spring-cloud-function-context/src/test/java/org/springframework/cloud/function/context/catalog/BeanFactoryAwarePojoFunctionRegistryTests.java
+++ b/spring-cloud-function-context/src/test/java/org/springframework/cloud/function/context/catalog/BeanFactoryAwarePojoFunctionRegistryTests.java
@@ -133,7 +133,7 @@ public class BeanFactoryAwarePojoFunctionRegistryTests {
 	}
 
 	// POJO Function
-	private static class MyFunctionLike {
+	public static class MyFunctionLike {
 		public String uppercase(String value) {
 			return value.toUpperCase();
 		}
diff --git a/spring-cloud-function-context/src/test/java/org/springframework/cloud/function/context/catalog/SimpleFunctionRegistryTests.java b/spring-cloud-function-context/src/test/java/org/springframework/cloud/function/context/catalog/SimpleFunctionRegistryTests.java
index 3c2f04e49..c570c33e8 100644
--- a/spring-cloud-function-context/src/test/java/org/springframework/cloud/function/context/catalog/SimpleFunctionRegistryTests.java
+++ b/spring-cloud-function-context/src/test/java/org/springframework/cloud/function/context/catalog/SimpleFunctionRegistryTests.java
@@ -135,7 +135,7 @@ public class SimpleFunctionRegistryTests {
 		};
 
 		FunctionRegistration<Function<Map<String, Person>, String>> registration = new FunctionRegistration<>(
-				function, "echo").type(FunctionType.of(functionType));
+				function, "echo").type(functionType);
 		SimpleFunctionRegistry catalog = new SimpleFunctionRegistry(this.conversionService, this.messageConverter,
 				new JacksonMapper(new ObjectMapper()));
 		catalog.register(registration);
diff --git a/spring-cloud-function-core/pom.xml b/spring-cloud-function-core/pom.xml
index afa411c78..14a51730a 100644
--- a/spring-cloud-function-core/pom.xml
+++ b/spring-cloud-function-core/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<dependencies>
diff --git a/spring-cloud-function-dependencies/pom.xml b/spring-cloud-function-dependencies/pom.xml
index ea2cc3035..9dd103699 100644
--- a/spring-cloud-function-dependencies/pom.xml
+++ b/spring-cloud-function-dependencies/pom.xml
@@ -6,11 +6,11 @@
 	<parent>
 		<artifactId>spring-cloud-dependencies-parent</artifactId>
 		<groupId>org.springframework.cloud</groupId>
-		<version>3.1.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 	<artifactId>spring-cloud-function-dependencies</artifactId>
-	<version>3.2.0-SNAPSHOT</version>
+	<version>4.0.0-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>Spring Cloud Function Dependencies</name>
 	<description>Spring Cloud Function Dependencies</description>
diff --git a/spring-cloud-function-deployer/pom.xml b/spring-cloud-function-deployer/pom.xml
index 0db33f47a..d3dc88e64 100644
--- a/spring-cloud-function-deployer/pom.xml
+++ b/spring-cloud-function-deployer/pom.xml
@@ -10,7 +10,7 @@
 		<parent>
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-function-parent</artifactId>
-			<version>3.2.0-SNAPSHOT</version>
+			<version>4.0.0-SNAPSHOT</version>
 		</parent>
 
 	<properties>
diff --git a/spring-cloud-function-deployer/src/it/bootapp-multi/pom.xml b/spring-cloud-function-deployer/src/it/bootapp-multi/pom.xml
index b71aaac3c..88e73bd0d 100644
--- a/spring-cloud-function-deployer/src/it/bootapp-multi/pom.xml
+++ b/spring-cloud-function-deployer/src/it/bootapp-multi/pom.xml
@@ -18,7 +18,7 @@
 
 	<properties>
 		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 	</properties>
 
diff --git a/spring-cloud-function-deployer/src/it/bootapp-with-javax/pom.xml b/spring-cloud-function-deployer/src/it/bootapp-with-javax/pom.xml
index 721ca3c4e..62d18fe1e 100644
--- a/spring-cloud-function-deployer/src/it/bootapp-with-javax/pom.xml
+++ b/spring-cloud-function-deployer/src/it/bootapp-with-javax/pom.xml
@@ -18,7 +18,7 @@
 
 	<properties>
 		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 	</properties>
 
diff --git a/spring-cloud-function-deployer/src/it/bootapp-with-scf/pom.xml b/spring-cloud-function-deployer/src/it/bootapp-with-scf/pom.xml
index 0b6f7a08d..bd65190f0 100644
--- a/spring-cloud-function-deployer/src/it/bootapp-with-scf/pom.xml
+++ b/spring-cloud-function-deployer/src/it/bootapp-with-scf/pom.xml
@@ -18,7 +18,7 @@
 
 	<properties>
 		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 	</properties>
 
diff --git a/spring-cloud-function-deployer/src/it/bootapp/pom.xml b/spring-cloud-function-deployer/src/it/bootapp/pom.xml
index dc7180ae6..ef70f9f2c 100644
--- a/spring-cloud-function-deployer/src/it/bootapp/pom.xml
+++ b/spring-cloud-function-deployer/src/it/bootapp/pom.xml
@@ -18,7 +18,7 @@
 
 	<properties>
 		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 	</properties>
 
diff --git a/spring-cloud-function-deployer/src/it/bootjar-multi/pom.xml b/spring-cloud-function-deployer/src/it/bootjar-multi/pom.xml
index a72e39a73..24d7e6d5a 100644
--- a/spring-cloud-function-deployer/src/it/bootjar-multi/pom.xml
+++ b/spring-cloud-function-deployer/src/it/bootjar-multi/pom.xml
@@ -18,7 +18,7 @@
 
 	<properties>
 		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 	</properties>
 
diff --git a/spring-cloud-function-deployer/src/it/bootjar/pom.xml b/spring-cloud-function-deployer/src/it/bootjar/pom.xml
index 6a945ae75..fd35734b2 100644
--- a/spring-cloud-function-deployer/src/it/bootjar/pom.xml
+++ b/spring-cloud-function-deployer/src/it/bootjar/pom.xml
@@ -18,7 +18,7 @@
 
 	<properties>
 		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 	</properties>
 
diff --git a/spring-cloud-function-deployer/src/it/bootjarnostart/pom.xml b/spring-cloud-function-deployer/src/it/bootjarnostart/pom.xml
index d065723b6..d8de56115 100644
--- a/spring-cloud-function-deployer/src/it/bootjarnostart/pom.xml
+++ b/spring-cloud-function-deployer/src/it/bootjarnostart/pom.xml
@@ -18,7 +18,7 @@
 
 	<properties>
 		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 	</properties>
 
diff --git a/spring-cloud-function-kotlin/pom.xml b/spring-cloud-function-kotlin/pom.xml
index a3bebfda8..c26714810 100644
--- a/spring-cloud-function-kotlin/pom.xml
+++ b/spring-cloud-function-kotlin/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<dependencies>
diff --git a/spring-cloud-function-rsocket/pom.xml b/spring-cloud-function-rsocket/pom.xml
index 735c6adee..4ba1ae743 100644
--- a/spring-cloud-function-rsocket/pom.xml
+++ b/spring-cloud-function-rsocket/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<properties>
diff --git a/spring-cloud-function-samples/function-functional-sample-aws/pom.xml b/spring-cloud-function-samples/function-functional-sample-aws/pom.xml
index 5cea3c211..ab4488ff9 100644
--- a/spring-cloud-function-samples/function-functional-sample-aws/pom.xml
+++ b/spring-cloud-function-samples/function-functional-sample-aws/pom.xml
@@ -6,7 +6,7 @@
 
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-functional-sample-aws</artifactId>
-	<version>2.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<packaging>jar</packaging>
 
 	<name>function-functional-sample-aws</name>
@@ -15,17 +15,16 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>1.8</java.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 		<aws-lambda-events.version>3.9.0</aws-lambda-events.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 	</properties>
 
 	<dependencies>
diff --git a/spring-cloud-function-samples/function-sample-aws-custom-bean/pom.xml b/spring-cloud-function-samples/function-sample-aws-custom-bean/pom.xml
index 7075db0ac..277123c90 100644
--- a/spring-cloud-function-samples/function-sample-aws-custom-bean/pom.xml
+++ b/spring-cloud-function-samples/function-sample-aws-custom-bean/pom.xml
@@ -5,19 +5,18 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-aws-custom-bean</artifactId>
-	<version>3.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<name>AWS Custom Runtime - @Bean sample</name>
 	<description>Demo project for Spring Cloud Function with custom AWS Lambda runtime using @Bean style</description>
 
 	<properties>
-		<java.version>1.8</java.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 	</properties>
 
 	<dependencies>
@@ -28,7 +27,7 @@
 	 		-->
 			<groupId>com.amazonaws</groupId>
 			<artifactId>aws-lambda-java-events</artifactId>
-			<version>2.2.6</version>
+			<version>3.9.0</version>
 		</dependency>
 
 		<dependency>
@@ -106,34 +105,38 @@
 		</plugins>
 	</build>
 	
-	<profiles>
-	  <profile>
-		 <id>integration</id>
-	    <build>
-	    	<plugins>
-			    <plugin>
-		            <artifactId>maven-surefire-plugin</artifactId>
-		            <version>2.22.0</version>
-		            <executions>
-		                <execution>
-		                    <phase>integration-test</phase>
-		                    <goals>
-		                        <goal>test</goal>
-		                    </goals>
-		                    <configuration>
-		                        <excludes>
-		                            <exclude>none</exclude>
-		                        </excludes>
-		                        <includes>
-		                            <include>com/example/ContainerTests.java</include>
-		                        </includes>
-		                    </configuration>
-		                </execution>
-		            </executions>
-		        </plugin>
-	        </plugins>
-        </build>
-	  </profile>
-	</profiles>
-
+	<repositories>
+		<repository>
+			<id>spring-snapshots</id>
+			<name>Spring Snapshots</name>
+			<url>https://repo.spring.io/libs-snapshot-local</url>
+		</repository>
+		<repository>
+			<id>spring-milestones</id>
+			<name>Spring Milestones</name>
+			<url>https://repo.spring.io/libs-milestone-local</url>
+		</repository>
+		<repository>
+			<id>spring-releases</id>
+			<name>Spring Releases</name>
+			<url>https://repo.spring.io/release</url>
+		</repository>
+	</repositories>
+	<pluginRepositories>
+		<pluginRepository>
+			<id>spring-snapshots</id>
+			<name>Spring Snapshots</name>
+			<url>https://repo.spring.io/libs-snapshot-local</url>
+		</pluginRepository>
+		<pluginRepository>
+			<id>spring-milestones</id>
+			<name>Spring Milestones</name>
+			<url>https://repo.spring.io/libs-milestone-local</url>
+		</pluginRepository>
+		<pluginRepository>
+			<id>spring-releases</id>
+			<name>Spring Releases</name>
+			<url>https://repo.spring.io/libs-release-local</url>
+		</pluginRepository>
+	</pluginRepositories>
 </project>
diff --git a/spring-cloud-function-samples/function-sample-aws-custom/pom.xml b/spring-cloud-function-samples/function-sample-aws-custom/pom.xml
index 54cf164e0..0db7d4a4a 100644
--- a/spring-cloud-function-samples/function-sample-aws-custom/pom.xml
+++ b/spring-cloud-function-samples/function-sample-aws-custom/pom.xml
@@ -5,19 +5,18 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-aws-custom</artifactId>
-	<version>3.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<name>function-sample-aws-custom</name>
 	<description>Demo project for Spring Cloud Function with custom AWS Lambda runtime</description>
 
 	<properties>
-		<java.version>1.8</java.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 	</properties>
 
 	<dependencies>
@@ -34,39 +33,21 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
 		</dependency>
-<!-- 		<dependency> -->
-<!-- 			<groupId>org.springframework</groupId> -->
-<!-- 			<artifactId>spring-web</artifactId> -->
-<!-- 		</dependency> -->
+		<dependency>
+		    <groupId>jakarta.servlet</groupId>
+		    <artifactId>jakarta.servlet-api</artifactId>
+		    <scope>provided</scope>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter</artifactId>
 		</dependency>
 		
-		
-		
-		
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
-<!-- 		<dependency> -->
-<!-- 			<groupId>io.projectreactor</groupId> -->
-<!-- 			<artifactId>reactor-test</artifactId> -->
-<!-- 			<scope>test</scope> -->
-<!-- 		</dependency> -->
-<!-- 		<dependency> -->
-<!-- 			<groupId>org.awaitility</groupId> -->
-<!-- 			<artifactId>awaitility</artifactId> -->
-<!-- 			<scope>test</scope> -->
-<!-- 		</dependency> -->
-<!-- 		<dependency> -->
-<!-- 			<groupId>org.testcontainers</groupId> -->
-<!-- 			<artifactId>testcontainers</artifactId> -->
-<!-- 			<version>1.14.3</version> -->
-<!-- 			<scope>test</scope> -->
-<!-- 		</dependency> -->
 	</dependencies>
 
 	<dependencyManagement>
@@ -167,28 +148,16 @@
 			<id>spring-snapshots</id>
 			<name>Spring Snapshots</name>
 			<url>https://repo.spring.io/libs-snapshot-local</url>
-			<snapshots>
-				<enabled>true</enabled>
-			</snapshots>
-			<releases>
-				<enabled>false</enabled>
-			</releases>
 		</repository>
 		<repository>
 			<id>spring-milestones</id>
 			<name>Spring Milestones</name>
 			<url>https://repo.spring.io/libs-milestone-local</url>
-			<snapshots>
-				<enabled>false</enabled>
-			</snapshots>
 		</repository>
 		<repository>
 			<id>spring-releases</id>
 			<name>Spring Releases</name>
 			<url>https://repo.spring.io/release</url>
-			<snapshots>
-				<enabled>false</enabled>
-			</snapshots>
 		</repository>
 	</repositories>
 	<pluginRepositories>
diff --git a/spring-cloud-function-samples/function-sample-aws-routing/pom.xml b/spring-cloud-function-samples/function-sample-aws-routing/pom.xml
index f76a50462..aa8bb8b1e 100644
--- a/spring-cloud-function-samples/function-sample-aws-routing/pom.xml
+++ b/spring-cloud-function-samples/function-sample-aws-routing/pom.xml
@@ -6,7 +6,7 @@
 
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-aws-routing</artifactId>
-	<version>2.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<packaging>jar</packaging>
 
 	<name>function-sample-aws-routing</name>
@@ -15,17 +15,16 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>1.8</java.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 		<aws-lambda-events.version>2.0.2</aws-lambda-events.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 	</properties>
 
 	<dependencies>
diff --git a/spring-cloud-function-samples/function-sample-aws/pom.xml b/spring-cloud-function-samples/function-sample-aws/pom.xml
index 6a9020757..b9bd8a07b 100644
--- a/spring-cloud-function-samples/function-sample-aws/pom.xml
+++ b/spring-cloud-function-samples/function-sample-aws/pom.xml
@@ -6,7 +6,7 @@
 
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-aws</artifactId>
-	<version>2.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<packaging>jar</packaging>
 
 	<name>function-sample-aws</name>
@@ -15,17 +15,16 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>1.8</java.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 		<aws-lambda-events.version>3.9.0</aws-lambda-events.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 	</properties>
 
 	<dependencies>
diff --git a/spring-cloud-function-samples/function-sample-azure/pom.xml b/spring-cloud-function-samples/function-sample-azure/pom.xml
index dcbd960a7..5d49dcc99 100644
--- a/spring-cloud-function-samples/function-sample-azure/pom.xml
+++ b/spring-cloud-function-samples/function-sample-azure/pom.xml
@@ -6,7 +6,7 @@
 
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-azure</artifactId>
-	<version>2.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<packaging>jar</packaging>
 
 	<name>function-sample-azure</name>
@@ -14,12 +14,11 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
-		<java.version>1.8</java.version>
 		<functionAppName>function-sample-azure</functionAppName>
 		<functionAppRegion>westus</functionAppRegion>
 		<functionResourceGroup>java-function-group</functionResourceGroup>
@@ -54,7 +53,7 @@
 			<dependency>
 				<groupId>org.springframework.cloud</groupId>
 				<artifactId>spring-cloud-function-dependencies</artifactId>
-				<version>3.2.0-SNAPSHOT</version>
+				<version>4.0.0-SNAPSHOT</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>
diff --git a/spring-cloud-function-samples/function-sample-cloudevent-rsocket/pom.xml b/spring-cloud-function-samples/function-sample-cloudevent-rsocket/pom.xml
index 760ed60bd..67ba27e59 100644
--- a/spring-cloud-function-samples/function-sample-cloudevent-rsocket/pom.xml
+++ b/spring-cloud-function-samples/function-sample-cloudevent-rsocket/pom.xml
@@ -12,13 +12,12 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
 	<properties>
-		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 	</properties>
 
@@ -28,7 +27,6 @@
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-function-rsocket</artifactId>
-            <version>3.1.0-SNAPSHOT</version>
         </dependency>
         <!-- end RSocket -->
         
@@ -37,7 +35,7 @@
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-stream-binder-kafka</artifactId>
-            <version>3.1.0-SNAPSHOT</version>
+            <version>4.0.0-SNAPSHOT</version>
         </dependency>
         <!-- end Kafka -->
         <dependency>
diff --git a/spring-cloud-function-samples/function-sample-cloudevent-stream/pom.xml b/spring-cloud-function-samples/function-sample-cloudevent-stream/pom.xml
index 3da862c23..5eb646eb9 100644
--- a/spring-cloud-function-samples/function-sample-cloudevent-stream/pom.xml
+++ b/spring-cloud-function-samples/function-sample-cloudevent-stream/pom.xml
@@ -4,20 +4,19 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-cloudevent-stream</artifactId>
-	<version>0.0.1-SNAPSHOT</version>
+	<version>4.0.0-RELEASE</version>
 	<name>function-sample-cloudevent-stream</name>
 	<description>Demo project for Spring Boot</description>
 
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
 	<properties>
-		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 	</properties>
 
@@ -29,13 +28,13 @@
 		 <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-stream</artifactId>
-            <version>3.2.0-M2</version>
+            <version>4.0.0-SNAPSHOT</version>
         </dependency>
         <!-- RabbitMQ - only needed if you intend to invoke via RabbitMQ -->
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-stream-binder-rabbit</artifactId>
-            <version>3.2.0-M2</version>
+            <version>4.0.0-SNAPSHOT</version>
         </dependency>
         <!-- end RabbitMQ -->
         
@@ -43,7 +42,7 @@
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-stream-binder-kafka</artifactId>
-            <version>3.2.0-M2</version>
+            <version>4.0.0-SNAPSHOT</version>
         </dependency>
         <!-- end Kafka -->
         <dependency>
diff --git a/spring-cloud-function-samples/function-sample-cloudevent/pom.xml b/spring-cloud-function-samples/function-sample-cloudevent/pom.xml
index b172d1885..834e4aa9e 100644
--- a/spring-cloud-function-samples/function-sample-cloudevent/pom.xml
+++ b/spring-cloud-function-samples/function-sample-cloudevent/pom.xml
@@ -11,13 +11,12 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
 	<properties>
-		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 	</properties>
 
diff --git a/spring-cloud-function-samples/function-sample-compiler/pom.xml b/spring-cloud-function-samples/function-sample-compiler/pom.xml
index dcf1e3f38..94ba570db 100644
--- a/spring-cloud-function-samples/function-sample-compiler/pom.xml
+++ b/spring-cloud-function-samples/function-sample-compiler/pom.xml
@@ -20,7 +20,7 @@
 
 	<properties>
 		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<reactor.version>3.1.2.RELEASE</reactor.version>
 		<wrapper.version>1.0.17.RELEASE</wrapper.version>
 	</properties>
diff --git a/spring-cloud-function-samples/function-sample-functional-aws-routing/pom.xml b/spring-cloud-function-samples/function-sample-functional-aws-routing/pom.xml
index be0aab22c..171f4cc3b 100644
--- a/spring-cloud-function-samples/function-sample-functional-aws-routing/pom.xml
+++ b/spring-cloud-function-samples/function-sample-functional-aws-routing/pom.xml
@@ -6,7 +6,7 @@
 
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-functional-aws-routing</artifactId>
-	<version>2.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<packaging>jar</packaging>
 
 	<name>function-sample-functional-aws-routing</name>
@@ -15,17 +15,16 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>1.8</java.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 		<aws-lambda-events.version>2.0.2</aws-lambda-events.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 	</properties>
 
 	<dependencies>
diff --git a/spring-cloud-function-samples/function-sample-gcp-background/pom.xml b/spring-cloud-function-samples/function-sample-gcp-background/pom.xml
index 8d569cd20..1fa44627a 100644
--- a/spring-cloud-function-samples/function-sample-gcp-background/pom.xml
+++ b/spring-cloud-function-samples/function-sample-gcp-background/pom.xml
@@ -7,7 +7,7 @@
 
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-gcp-background</artifactId>
-	<version>2.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<packaging>jar</packaging>
 
 	<name>function-sample-gcp-background</name>
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
@@ -23,7 +23,7 @@
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-function-adapter-gcp</artifactId>
-			<version>3.1.0-SNAPSHOT</version>
+			<version>4.0.0-SNAPSHOT</version>
 		</dependency>
 	</dependencies>
 
diff --git a/spring-cloud-function-samples/function-sample-gcp-http/pom.xml b/spring-cloud-function-samples/function-sample-gcp-http/pom.xml
index da1a9d1fc..e3a92d915 100644
--- a/spring-cloud-function-samples/function-sample-gcp-http/pom.xml
+++ b/spring-cloud-function-samples/function-sample-gcp-http/pom.xml
@@ -7,7 +7,7 @@
 
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-gcp-http</artifactId>
-	<version>2.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<packaging>jar</packaging>
 
 	<name>function-sample-gcp-http</name>
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
@@ -23,7 +23,7 @@
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-function-adapter-gcp</artifactId>
-			<version>3.1.3-SNAPSHOT</version>
+			<version>4.0.0-SNAPSHOT</version>
 		</dependency>
 
 		<!-- test dependencies -->
@@ -59,7 +59,6 @@
 		<plugins>
 			<plugin>
 				<artifactId>maven-deploy-plugin</artifactId>
-				<version>2.8.2</version>
 				<configuration>
 					<skip>true</skip>
 				</configuration>
diff --git a/spring-cloud-function-samples/function-sample-grpc-cloudevent/pom.xml b/spring-cloud-function-samples/function-sample-grpc-cloudevent/pom.xml
index 39715f0aa..ca001c973 100644
--- a/spring-cloud-function-samples/function-sample-grpc-cloudevent/pom.xml
+++ b/spring-cloud-function-samples/function-sample-grpc-cloudevent/pom.xml
@@ -7,17 +7,16 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/> 
 	</parent>
 	<groupId>com.example.grpc</groupId>
 	<artifactId>function-sample-grpc-cloudevent</artifactId>
-	<version>0.0.1-RELEASE</version>
+	<version>4.0.0-RELEASE</version>
 	<name>function-sample-grpc-cloudevent</name>
 	<description>Demo project for Spring Boot</description>
 	<properties>
-		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 	</properties>
 	<dependencies>
 		<dependency>
diff --git a/spring-cloud-function-samples/function-sample-kotlin-web/pom.xml b/spring-cloud-function-samples/function-sample-kotlin-web/pom.xml
index 350bec73a..3b081c326 100644
--- a/spring-cloud-function-samples/function-sample-kotlin-web/pom.xml
+++ b/spring-cloud-function-samples/function-sample-kotlin-web/pom.xml
@@ -4,22 +4,17 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-kotlin-web</artifactId>
-	<version>1.0</version>
+	<version>4.0.0</version>
 	<name>function-sample-kotlin-web</name>
 	<description>Demo project for Spring Cloud Function Web Kotlin integration</description>
 	
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
-	<properties>
-		<java.version>1.8</java.version>
-		<kotlin.version>1.4.21</kotlin.version>
-	</properties>
-
 	<dependencies>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -28,27 +23,25 @@
 		<dependency>
 			<groupId>org.jetbrains.kotlin</groupId>
 			<artifactId>kotlin-reflect</artifactId>
-			<version>1.6.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.jetbrains.kotlin</groupId>
 			<artifactId>kotlin-stdlib-jdk8</artifactId>
-			<version>1.6.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-function-kotlin</artifactId>
-			<version>3.2.0-SNAPSHOT</version>
+			<version>4.0.0-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-function-web</artifactId>
-			<version>3.2.0-SNAPSHOT</version>
+			<version>4.0.0-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-function-context</artifactId>
-			<version>3.2.0-SNAPSHOT</version>
+			<version>4.0.0-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -79,7 +72,6 @@
 			<plugin>
 				<groupId>org.jetbrains.kotlin</groupId>
 				<artifactId>kotlin-maven-plugin</artifactId>
-				<version>1.6.0</version>
 				<configuration>
 					<args>
 						<arg>-Xjsr305=strict</arg>
@@ -92,11 +84,46 @@
 					<dependency>
 						<groupId>org.jetbrains.kotlin</groupId>
 						<artifactId>kotlin-maven-allopen</artifactId>
-						<version>${kotlin.version}</version>
+						<version>1.4.21</version>
 					</dependency>
 				</dependencies>
 			</plugin>
 		</plugins>
 	</build>
+	
+	<repositories>
+		<repository>
+			<id>spring-snapshots</id>
+			<name>Spring Snapshots</name>
+			<url>https://repo.spring.io/libs-snapshot-local</url>
+		</repository>
+		<repository>
+			<id>spring-milestones</id>
+			<name>Spring Milestones</name>
+			<url>https://repo.spring.io/libs-milestone-local</url>
+		</repository>
+		<repository>
+			<id>spring-releases</id>
+			<name>Spring Releases</name>
+			<url>https://repo.spring.io/release</url>
+		</repository>
+	</repositories>
+	<pluginRepositories>
+		<pluginRepository>
+			<id>spring-snapshots</id>
+			<name>Spring Snapshots</name>
+			<url>https://repo.spring.io/libs-snapshot-local</url>
+		</pluginRepository>
+		<pluginRepository>
+			<id>spring-milestones</id>
+			<name>Spring Milestones</name>
+			<url>https://repo.spring.io/libs-milestone-local</url>
+		</pluginRepository>
+		<pluginRepository>
+			<id>spring-releases</id>
+			<name>Spring Releases</name>
+			<url>https://repo.spring.io/libs-release-local</url>
+		</pluginRepository>
+	</pluginRepositories>
 
 </project>
diff --git a/spring-cloud-function-samples/function-sample-pof/pom.xml b/spring-cloud-function-samples/function-sample-pof/pom.xml
index d90cf31fe..1c37adfda 100644
--- a/spring-cloud-function-samples/function-sample-pof/pom.xml
+++ b/spring-cloud-function-samples/function-sample-pof/pom.xml
@@ -5,7 +5,7 @@
 
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-pof</artifactId>
-	<version>2.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<packaging>jar</packaging>
 	<name>function-sample-pof</name>
 	<description>Spring Cloud Function Web Support</description>
@@ -13,16 +13,15 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>1.8</java.version>
 		<reactor.version>3.1.2.RELEASE</reactor.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 	</properties>
 
 	<dependencies>
diff --git a/spring-cloud-function-samples/function-sample-pojo/pom.xml b/spring-cloud-function-samples/function-sample-pojo/pom.xml
index 6a6ea84a9..af9744684 100644
--- a/spring-cloud-function-samples/function-sample-pojo/pom.xml
+++ b/spring-cloud-function-samples/function-sample-pojo/pom.xml
@@ -6,7 +6,7 @@
 
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-pojo</artifactId>
-	<version>2.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<packaging>jar</packaging>
 	<name>function-sample-pojo</name>
 	<description>Spring Cloud Function Web Support</description>
@@ -14,13 +14,12 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
 	<properties>
-		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 	</properties>
 
diff --git a/spring-cloud-function-samples/function-sample-spring-integration/pom.xml b/spring-cloud-function-samples/function-sample-spring-integration/pom.xml
index 4161ebea2..8cc51067b 100644
--- a/spring-cloud-function-samples/function-sample-spring-integration/pom.xml
+++ b/spring-cloud-function-samples/function-sample-spring-integration/pom.xml
@@ -20,7 +20,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 	</properties>
 
 	<dependencies>
diff --git a/spring-cloud-function-samples/function-sample-supplier-exporter/pom.xml b/spring-cloud-function-samples/function-sample-supplier-exporter/pom.xml
index eabf7d2fb..88053396f 100644
--- a/spring-cloud-function-samples/function-sample-supplier-exporter/pom.xml
+++ b/spring-cloud-function-samples/function-sample-supplier-exporter/pom.xml
@@ -6,7 +6,7 @@
 	
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample-aws-supplier-exporter</artifactId>
-	<version>2.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<packaging>jar</packaging>
 	<name>function-sample-aws-supplier-exporter</name>
 	<description>Spring Cloud Function Example showing Supplier Exporter</description>
@@ -14,13 +14,12 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
 	<properties>
-		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 	</properties>
 
 	<dependencies>
@@ -119,4 +118,38 @@
         </build>
 	  </profile>
 	</profiles>
+	<repositories>
+		<repository>
+			<id>spring-snapshots</id>
+			<name>Spring Snapshots</name>
+			<url>https://repo.spring.io/libs-snapshot-local</url>
+		</repository>
+		<repository>
+			<id>spring-milestones</id>
+			<name>Spring Milestones</name>
+			<url>https://repo.spring.io/libs-milestone-local</url>
+		</repository>
+		<repository>
+			<id>spring-releases</id>
+			<name>Spring Releases</name>
+			<url>https://repo.spring.io/release</url>
+		</repository>
+	</repositories>
+	<pluginRepositories>
+		<pluginRepository>
+			<id>spring-snapshots</id>
+			<name>Spring Snapshots</name>
+			<url>https://repo.spring.io/libs-snapshot-local</url>
+		</pluginRepository>
+		<pluginRepository>
+			<id>spring-milestones</id>
+			<name>Spring Milestones</name>
+			<url>https://repo.spring.io/libs-milestone-local</url>
+		</pluginRepository>
+		<pluginRepository>
+			<id>spring-releases</id>
+			<name>Spring Releases</name>
+			<url>https://repo.spring.io/libs-release-local</url>
+		</pluginRepository>
+	</pluginRepositories>
 </project>
diff --git a/spring-cloud-function-samples/function-sample-task/pom.xml b/spring-cloud-function-samples/function-sample-task/pom.xml
index c53badfb7..fe24b7221 100644
--- a/spring-cloud-function-samples/function-sample-task/pom.xml
+++ b/spring-cloud-function-samples/function-sample-task/pom.xml
@@ -20,7 +20,7 @@
 
 	<properties>
 		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.10.RELEASE</wrapper.version>
 		<reactor.version>3.1.2.RELEASE</reactor.version>
 	</properties>
diff --git a/spring-cloud-function-samples/function-sample/pom.xml b/spring-cloud-function-samples/function-sample/pom.xml
index a839518d8..b7b68a826 100644
--- a/spring-cloud-function-samples/function-sample/pom.xml
+++ b/spring-cloud-function-samples/function-sample/pom.xml
@@ -6,7 +6,7 @@
 
 	<groupId>io.spring.sample</groupId>
 	<artifactId>function-sample</artifactId>
-	<version>2.0.0.RELEASE</version>
+	<version>4.0.0.RELEASE</version>
 	<packaging>jar</packaging>
 	<name>function-sample</name>
 	<description>Spring Cloud Function Web Support</description>
@@ -14,13 +14,12 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.0-SNAPSHOT</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
 	<properties>
-		<java.version>1.8</java.version>
-		<spring-cloud-function.version>3.2.0-SNAPSHOT</spring-cloud-function.version>
+		<spring-cloud-function.version>4.0.0-SNAPSHOT</spring-cloud-function.version>
 		<wrapper.version>1.0.27.RELEASE</wrapper.version>
 	</properties>
 
diff --git a/spring-cloud-function-samples/pom.xml b/spring-cloud-function-samples/pom.xml
index 3750f7e8e..9185ddc07 100644
--- a/spring-cloud-function-samples/pom.xml
+++ b/spring-cloud-function-samples/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<modules>
diff --git a/spring-cloud-function-task/pom.xml b/spring-cloud-function-task/pom.xml
index 933a34898..5731b90d5 100644
--- a/spring-cloud-function-task/pom.xml
+++ b/spring-cloud-function-task/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<dependencies>
diff --git a/spring-cloud-function-web/pom.xml b/spring-cloud-function-web/pom.xml
index 7a694a034..d22873fde 100644
--- a/spring-cloud-function-web/pom.xml
+++ b/spring-cloud-function-web/pom.xml
@@ -12,10 +12,15 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 
 	<dependencies>
+		<dependency>
+		    <groupId>jakarta.servlet</groupId>
+		    <artifactId>jakarta.servlet-api</artifactId>
+		    <scope>provided</scope>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-webmvc</artifactId>
@@ -35,11 +40,6 @@
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-function-context</artifactId>
 		</dependency>
-		<dependency>
-			<groupId>javax.servlet</groupId>
-			<artifactId>javax.servlet-api</artifactId>
-			<scope>provided</scope>
-		</dependency>
 		<dependency>
 			<groupId>commons-logging</groupId>
 			<artifactId>commons-logging</artifactId>
diff --git a/spring-cloud-function-web/src/main/java/org/springframework/cloud/function/web/mvc/FunctionHandlerMapping.java b/spring-cloud-function-web/src/main/java/org/springframework/cloud/function/web/mvc/FunctionHandlerMapping.java
index f22f2e2db..0423d9710 100644
--- a/spring-cloud-function-web/src/main/java/org/springframework/cloud/function/web/mvc/FunctionHandlerMapping.java
+++ b/spring-cloud-function-web/src/main/java/org/springframework/cloud/function/web/mvc/FunctionHandlerMapping.java
@@ -18,7 +18,7 @@ package org.springframework.cloud.function.web.mvc;
 
 import java.util.HashMap;
 
-import javax.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletRequest;
 
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -35,6 +35,8 @@ import org.springframework.web.method.HandlerMethod;
 import org.springframework.web.servlet.HandlerMapping;
 import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
 
+
+
 /**
  * @author Dave Syer
  * @author Oleg Zhurakousky
diff --git a/spring-cloud-starter-function-web/pom.xml b/spring-cloud-starter-function-web/pom.xml
index ed34879fa..04fa6ce0b 100644
--- a/spring-cloud-starter-function-web/pom.xml
+++ b/spring-cloud-starter-function-web/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 	<artifactId>spring-cloud-starter-function-web</artifactId>
diff --git a/spring-cloud-starter-function-webflux/pom.xml b/spring-cloud-starter-function-webflux/pom.xml
index 6ee319568..994b8bf30 100644
--- a/spring-cloud-starter-function-webflux/pom.xml
+++ b/spring-cloud-starter-function-webflux/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-function-parent</artifactId>
-		<version>3.2.0-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>spring-cloud-starter-function-webflux</artifactId>
 	<name>spring-cloud-starter-function-webflux</name>