diff --git a/docs/pom.xml b/docs/pom.xml
index 94ddcadd..18cddaf6 100644
--- a/docs/pom.xml
+++ b/docs/pom.xml
@@ -10,7 +10,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-build</artifactId>
-		<version>3.1.1-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 	<properties>
 		<docs.main>spring-cloud-build</docs.main>
diff --git a/pom.xml b/pom.xml
index f3ace09a..dd18d5d0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.springframework.cloud</groupId>
 	<artifactId>spring-cloud-build</artifactId>
-	<version>3.1.1-SNAPSHOT</version>
+	<version>4.0.0-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>Spring Cloud Parent</name>
 	<description>Spring Cloud parent pom, managing plugins and dependencies for Spring
@@ -19,7 +19,7 @@
 	</modules>
 	<url>https://spring.io/spring-cloud</url>
 	<properties>
-		<java.version>1.8</java.version>
+		<java.version>17</java.version>
 		<resource.delimiter>@
 		</resource.delimiter> <!-- delimiter that doesn't clash with Spring ${} placeholders -->
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -28,8 +28,8 @@
 		<maven.compiler.target>${java.version}</maven.compiler.target>
 		<main.basedir>${basedir}</main.basedir>
 		<docs.main>${project.artifactId}</docs.main>
-		<spring-boot.version>2.6.1</spring-boot.version>
-		<spring-cloud-build.version>3.1.1-SNAPSHOT</spring-cloud-build.version>
+		<spring-boot.version>3.0.0-SNAPSHOT</spring-boot.version>
+		<spring-cloud-build.version>4.0.0-SNAPSHOT</spring-cloud-build.version>
 		<docs.resources.dir>${project.build.directory}/build-docs</docs.resources.dir>
 		<docs.classes.dir>${project.build.directory}/build-docs-classes</docs.classes.dir>
 		<refdocs.build.directory>${project.build.directory}/refdocs/</refdocs.build.directory>
diff --git a/spring-cloud-build-dependencies/pom.xml b/spring-cloud-build-dependencies/pom.xml
index 84d0a69a..cb20f576 100644
--- a/spring-cloud-build-dependencies/pom.xml
+++ b/spring-cloud-build-dependencies/pom.xml
@@ -5,7 +5,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.springframework.cloud</groupId>
 	<artifactId>spring-cloud-build-dependencies</artifactId>
-	<version>3.1.1-SNAPSHOT</version>
+	<version>4.0.0-SNAPSHOT</version>
 	<name>spring-cloud-build-dependencies</name>
 	<packaging>pom</packaging>
 	<description>Spring Cloud Build Dependencies: an internal BOM for use with Spring
@@ -14,12 +14,12 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-dependencies</artifactId>
-		<version>2.6.1</version>
+		<version>3.0.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<spring-boot.version>2.6.1</spring-boot.version>
+		<spring-boot.version>3.0.0-SNAPSHOT</spring-boot.version>
 		<maven-gpg-plugin.version>3.0.1</maven-gpg-plugin.version>
 	</properties>
 	<build>
diff --git a/spring-cloud-build-tools/pom.xml b/spring-cloud-build-tools/pom.xml
index cd04378d..7a1e82cf 100644
--- a/spring-cloud-build-tools/pom.xml
+++ b/spring-cloud-build-tools/pom.xml
@@ -10,7 +10,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-build</artifactId>
-		<version>3.1.1-SNAPSHOT</version>
+		<version>4.0.0-SNAPSHOT</version>
 	</parent>
 	<dependencies>
 		<dependency>
diff --git a/spring-cloud-dependencies-parent/pom.xml b/spring-cloud-dependencies-parent/pom.xml
index 201f072d..855f0275 100644
--- a/spring-cloud-dependencies-parent/pom.xml
+++ b/spring-cloud-dependencies-parent/pom.xml
@@ -4,7 +4,7 @@
 		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.springframework.cloud</groupId>
-	<version>3.1.1-SNAPSHOT</version>
+	<version>4.0.0-SNAPSHOT</version>
 	<artifactId>spring-cloud-dependencies-parent</artifactId>
 	<packaging>pom</packaging>
 	<name>spring-cloud-dependencies-parent</name>