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 5a2193eb0..bad23ec77 100644
--- a/spring-cloud-function-samples/function-functional-sample-aws/pom.xml
+++ b/spring-cloud-function-samples/function-functional-sample-aws/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
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 93f0ad9ac..ddb876057 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
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>io.spring.sample</groupId>
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 49afe99ad..f746174c4 100644
--- a/spring-cloud-function-samples/function-sample-aws-custom/pom.xml
+++ b/spring-cloud-function-samples/function-sample-aws-custom/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>io.spring.sample</groupId>
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 4a62478ef..26b1f908c 100644
--- a/spring-cloud-function-samples/function-sample-aws-routing/pom.xml
+++ b/spring-cloud-function-samples/function-sample-aws-routing/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/spring-cloud-function-samples/function-sample-aws/pom.xml b/spring-cloud-function-samples/function-sample-aws/pom.xml
index faf5240f0..ff9b3c7e5 100644
--- a/spring-cloud-function-samples/function-sample-aws/pom.xml
+++ b/spring-cloud-function-samples/function-sample-aws/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/spring-cloud-function-samples/function-sample-azure-eventgrid-trigger/pom.xml b/spring-cloud-function-samples/function-sample-azure-eventgrid-trigger/pom.xml
index fca015222..fff644bde 100644
--- a/spring-cloud-function-samples/function-sample-azure-eventgrid-trigger/pom.xml
+++ b/spring-cloud-function-samples/function-sample-azure-eventgrid-trigger/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath/>
 		<!-- lookup parent from repository -->
 	</parent>
diff --git a/spring-cloud-function-samples/function-sample-azure/pom.xml b/spring-cloud-function-samples/function-sample-azure/pom.xml
index 7759714e8..3188db48d 100644
--- a/spring-cloud-function-samples/function-sample-azure/pom.xml
+++ b/spring-cloud-function-samples/function-sample-azure/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/spring-cloud-function-samples/function-sample-cloudevent-sdk/pom.xml b/spring-cloud-function-samples/function-sample-cloudevent-sdk/pom.xml
index fdb380283..356a69f63 100644
--- a/spring-cloud-function-samples/function-sample-cloudevent-sdk/pom.xml
+++ b/spring-cloud-function-samples/function-sample-cloudevent-sdk/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath/>
 	</parent>
 
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 2fcf2d441..ce583ebf4 100644
--- a/spring-cloud-function-samples/function-sample-gcp-background/pom.xml
+++ b/spring-cloud-function-samples/function-sample-gcp-background/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/spring-cloud-function-samples/function-sample-pof/pom.xml b/spring-cloud-function-samples/function-sample-pof/pom.xml
index c406dcfee..2c2583768 100644
--- a/spring-cloud-function-samples/function-sample-pof/pom.xml
+++ b/spring-cloud-function-samples/function-sample-pof/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath/>
 	</parent>
 
diff --git a/spring-cloud-function-samples/function-sample-pojo/pom.xml b/spring-cloud-function-samples/function-sample-pojo/pom.xml
index 3ae3d7027..8e1f622b8 100644
--- a/spring-cloud-function-samples/function-sample-pojo/pom.xml
+++ b/spring-cloud-function-samples/function-sample-pojo/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath/>
 	</parent>
 
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 b0b3c5a54..f1fb5e36a 100644
--- a/spring-cloud-function-samples/function-sample-spring-integration/pom.xml
+++ b/spring-cloud-function-samples/function-sample-spring-integration/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath />
 	</parent>
 
diff --git a/spring-cloud-function-samples/function-sample/pom.xml b/spring-cloud-function-samples/function-sample/pom.xml
index 33df9d2d0..49c592a02 100644
--- a/spring-cloud-function-samples/function-sample/pom.xml
+++ b/spring-cloud-function-samples/function-sample/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.2</version>
+		<version>4.0.5</version>
 		<relativePath />
 	</parent>