diff --git a/docs/pom.xml b/docs/pom.xml
index a2e773be..edc67a18 100644
--- a/docs/pom.xml
+++ b/docs/pom.xml
@@ -15,7 +15,7 @@
 	<properties>
 		<docs.main>spring-cloud-build</docs.main>
 		<!-- Comma separated list of whitelisted branches -->
-		<docs.whitelisted.branches>1.2.x,1.3.x,2.0.x,2.1.x</docs.whitelisted.branches>
+		<docs.whitelisted.branches>2.1.x,2.2.x</docs.whitelisted.branches>
 		<main.basedir>${basedir}/..</main.basedir>
 		<gmavenplus-plugin.version>1.8.1</gmavenplus-plugin.version>
 		<groovy.version>3.0.2</groovy.version>
diff --git a/docs/src/test/bats/fixtures/gs-contract-rest/complete/contract-rest-client/pom.xml b/docs/src/test/bats/fixtures/gs-contract-rest/complete/contract-rest-client/pom.xml
index dfb2884a..8c4ab245 100644
--- a/docs/src/test/bats/fixtures/gs-contract-rest/complete/contract-rest-client/pom.xml
+++ b/docs/src/test/bats/fixtures/gs-contract-rest/complete/contract-rest-client/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.2.4.RELEASE</version>
+		<version>2.3.0.M4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/docs/src/test/bats/fixtures/gs-contract-rest/complete/contract-rest-service/pom.xml b/docs/src/test/bats/fixtures/gs-contract-rest/complete/contract-rest-service/pom.xml
index f76d047f..c400c20e 100644
--- a/docs/src/test/bats/fixtures/gs-contract-rest/complete/contract-rest-service/pom.xml
+++ b/docs/src/test/bats/fixtures/gs-contract-rest/complete/contract-rest-service/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.2.4.RELEASE</version>
+		<version>2.3.0.M4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/docs/src/test/bats/fixtures/gs-contract-rest/initial/contract-rest-client/pom.xml b/docs/src/test/bats/fixtures/gs-contract-rest/initial/contract-rest-client/pom.xml
index dfb2884a..8c4ab245 100644
--- a/docs/src/test/bats/fixtures/gs-contract-rest/initial/contract-rest-client/pom.xml
+++ b/docs/src/test/bats/fixtures/gs-contract-rest/initial/contract-rest-client/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.2.4.RELEASE</version>
+		<version>2.3.0.M4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/docs/src/test/bats/fixtures/gs-contract-rest/initial/contract-rest-service/pom.xml b/docs/src/test/bats/fixtures/gs-contract-rest/initial/contract-rest-service/pom.xml
index 5980d4f2..e8d4c9d1 100644
--- a/docs/src/test/bats/fixtures/gs-contract-rest/initial/contract-rest-service/pom.xml
+++ b/docs/src/test/bats/fixtures/gs-contract-rest/initial/contract-rest-service/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.2.4.RELEASE</version>
+		<version>2.3.0.M4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/pom.xml b/pom.xml
index 2157e73a..e7033eaf 100644
--- a/pom.xml
+++ b/pom.xml
@@ -28,7 +28,7 @@
 		<maven.compiler.target>${java.version}</maven.compiler.target>
 		<main.basedir>${basedir}</main.basedir>
 		<docs.main>${project.artifactId}</docs.main>
-		<spring-boot.version>2.3.0.BUILD-SNAPSHOT</spring-boot.version>
+		<spring-boot.version>2.3.0.M4</spring-boot.version>
 		<spring-cloud-build.version>3.0.0.BUILD-SNAPSHOT</spring-cloud-build.version>
 		<docs.resources.dir>${project.build.directory}/build-docs</docs.resources.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 9382bbb0..e9e72d37 100644
--- a/spring-cloud-build-dependencies/pom.xml
+++ b/spring-cloud-build-dependencies/pom.xml
@@ -14,12 +14,12 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-dependencies</artifactId>
-		<version>2.3.0.BUILD-SNAPSHOT</version>
+		<version>2.3.0.M4</version>
 		<relativePath/>
 	</parent>
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<spring-boot.version>2.3.0.BUILD-SNAPSHOT</spring-boot.version>
+		<spring-boot.version>2.3.0.M4</spring-boot.version>
 	</properties>
 	<build>
 		<plugins>