diff --git a/samples/standalone/contracts/com/example/server/pom.xml b/samples/standalone/contracts/com/example/server/pom.xml
index 027755dd1f..e15142831e 100644
--- a/samples/standalone/contracts/com/example/server/pom.xml
+++ b/samples/standalone/contracts/com/example/server/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.3.1.RELEASE</version>
+		<version>2.4.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
diff --git a/samples/standalone/dsl/http-client/pom.xml b/samples/standalone/dsl/http-client/pom.xml
index 2f75cf0eb2..94d71831fc 100644
--- a/samples/standalone/dsl/http-client/pom.xml
+++ b/samples/standalone/dsl/http-client/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.3.1.RELEASE</version>
+		<version>2.4.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
diff --git a/samples/standalone/dsl/http-server/pom.xml b/samples/standalone/dsl/http-server/pom.xml
index 6bc9aef2ea..5bf4ab4376 100644
--- a/samples/standalone/dsl/http-server/pom.xml
+++ b/samples/standalone/dsl/http-server/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.3.1.RELEASE</version>
+		<version>2.4.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
diff --git a/samples/standalone/restdocs/http-client/pom.xml b/samples/standalone/restdocs/http-client/pom.xml
index fa73ffe2ea..ce0464b362 100644
--- a/samples/standalone/restdocs/http-client/pom.xml
+++ b/samples/standalone/restdocs/http-client/pom.xml
@@ -31,7 +31,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.3.1.RELEASE</version>
+		<version>2.4.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
diff --git a/samples/standalone/restdocs/http-server/pom.xml b/samples/standalone/restdocs/http-server/pom.xml
index ca714e0184..1c06a336e9 100644
--- a/samples/standalone/restdocs/http-server/pom.xml
+++ b/samples/standalone/restdocs/http-server/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.3.1.RELEASE</version>
+		<version>2.4.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
diff --git a/samples/standalone/webclient/http-client/pom.xml b/samples/standalone/webclient/http-client/pom.xml
index 776d656983..5bf2c28581 100644
--- a/samples/standalone/webclient/http-client/pom.xml
+++ b/samples/standalone/webclient/http-client/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.3.1.RELEASE</version>
+		<version>2.4.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>
 
diff --git a/samples/standalone/webclient/http-server/pom.xml b/samples/standalone/webclient/http-server/pom.xml
index c918fa06d1..5e0283af74 100644
--- a/samples/standalone/webclient/http-server/pom.xml
+++ b/samples/standalone/webclient/http-server/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.3.1.RELEASE</version>
+		<version>2.4.0-SNAPSHOT</version>
 		<relativePath/>
 	</parent>