diff --git a/eureka/apps/eureka/pom.xml b/eureka/apps/eureka/pom.xml
index 7f7b552..4e8fe01 100644
--- a/eureka/apps/eureka/pom.xml
+++ b/eureka/apps/eureka/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.6</version>
+    <version>4.0.0</version>
   </parent>
 
   <groupId>de.codecentric</groupId>
diff --git a/eureka/apps/hello-world/pom.xml b/eureka/apps/hello-world/pom.xml
index 8cce77e..c57b9e1 100644
--- a/eureka/apps/hello-world/pom.xml
+++ b/eureka/apps/hello-world/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.6</version>
+    <version>4.0.0</version>
   </parent>
 
   <groupId>de.codecentric</groupId>
diff --git a/eureka/apps/spring-boot-admin/pom.xml b/eureka/apps/spring-boot-admin/pom.xml
index c113fef..132ccee 100644
--- a/eureka/apps/spring-boot-admin/pom.xml
+++ b/eureka/apps/spring-boot-admin/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.6</version>
+    <version>4.0.0</version>
   </parent>
 
   <groupId>de.codecentric</groupId>
diff --git a/kubernetes/apps/health-simulator/pom.xml b/kubernetes/apps/health-simulator/pom.xml
index 81a0174..9cb11d7 100644
--- a/kubernetes/apps/health-simulator/pom.xml
+++ b/kubernetes/apps/health-simulator/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.6</version>
+    <version>4.0.0</version>
   </parent>
 
   <groupId>de.codecentric</groupId>
diff --git a/kubernetes/apps/hello-world/pom.xml b/kubernetes/apps/hello-world/pom.xml
index a97d6a0..443ecf7 100644
--- a/kubernetes/apps/hello-world/pom.xml
+++ b/kubernetes/apps/hello-world/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.6</version>
+    <version>4.0.0</version>
   </parent>
 
   <groupId>de.codecentric</groupId>
diff --git a/kubernetes/apps/spring-boot-admin-discoveryclient/pom.xml b/kubernetes/apps/spring-boot-admin-discoveryclient/pom.xml
index 2089a54..0a69f46 100644
--- a/kubernetes/apps/spring-boot-admin-discoveryclient/pom.xml
+++ b/kubernetes/apps/spring-boot-admin-discoveryclient/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.6</version>
+    <version>4.0.0</version>
   </parent>
 
   <groupId>de.codecentric</groupId>
diff --git a/kubernetes/apps/spring-boot-admin-fabric8/pom.xml b/kubernetes/apps/spring-boot-admin-fabric8/pom.xml
index a78a764..1560ec1 100644
--- a/kubernetes/apps/spring-boot-admin-fabric8/pom.xml
+++ b/kubernetes/apps/spring-boot-admin-fabric8/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.6</version>
+    <version>4.0.0</version>
   </parent>
 
   <groupId>de.codecentric</groupId>
diff --git a/kubernetes/apps/spring-boot-admin-kubernetes/pom.xml b/kubernetes/apps/spring-boot-admin-kubernetes/pom.xml
index 2d2efb0..37994f3 100644
--- a/kubernetes/apps/spring-boot-admin-kubernetes/pom.xml
+++ b/kubernetes/apps/spring-boot-admin-kubernetes/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.6</version>
+    <version>4.0.0</version>
   </parent>
 
   <groupId>de.codecentric</groupId>
diff --git a/nacos/apps/health-simulator/pom.xml b/nacos/apps/health-simulator/pom.xml
index 09d9dfc..4c689b2 100644
--- a/nacos/apps/health-simulator/pom.xml
+++ b/nacos/apps/health-simulator/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.6</version>
+    <version>4.0.0</version>
   </parent>
 
   <groupId>de.codecentric</groupId>
diff --git a/nacos/apps/hello-world/pom.xml b/nacos/apps/hello-world/pom.xml
index 6de4cc8..f88595c 100644
--- a/nacos/apps/hello-world/pom.xml
+++ b/nacos/apps/hello-world/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.6</version>
+    <version>4.0.0</version>
   </parent>
 
   <groupId>de.codecentric</groupId>
diff --git a/nacos/apps/spring-boot-admin/pom.xml b/nacos/apps/spring-boot-admin/pom.xml
index 9bf9357..734505f 100644
--- a/nacos/apps/spring-boot-admin/pom.xml
+++ b/nacos/apps/spring-boot-admin/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.5.6</version>
+    <version>4.0.0</version>
   </parent>
 
   <groupId>de.codecentric</groupId>
diff --git a/nginx/apps/hello-world/pom.xml b/nginx/apps/hello-world/pom.xml
index 50a02c7..ef3d14c 100644
--- a/nginx/apps/hello-world/pom.xml
+++ b/nginx/apps/hello-world/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.5.6</version>
+		<version>4.0.0</version>
 	</parent>
 
 	<groupId>de.codecentric</groupId>
diff --git a/nginx/apps/spring-boot-admin/pom.xml b/nginx/apps/spring-boot-admin/pom.xml
index db74bfb..5949266 100644
--- a/nginx/apps/spring-boot-admin/pom.xml
+++ b/nginx/apps/spring-boot-admin/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.5.6</version>
+		<version>4.0.0</version>
 	</parent>
 
 	<groupId>de.codecentric</groupId>