diff --git a/.github/workflows/springboot2-jpa-swagger3.yml b/.github/workflows/springboot2-jpa-swagger3.yml
index 5fe4e2c7..b3801465 100644
--- a/.github/workflows/springboot2-jpa-swagger3.yml
+++ b/.github/workflows/springboot2-jpa-swagger3.yml
@@ -25,11 +25,11 @@ jobs:
         with:
           fetch-depth: 0 # Shallow clones should be disabled for a better relevancy of analysis
 
-      - name: Set up JDK 20
+      - name: Set up JDK 21
         uses: actions/setup-java@v4.2.1
         with:
-          java-version: 20
-          distribution: "zulu"
+          java-version: 21
+          distribution: "temurin"
           cache: "maven"
       - name: Build and analyze
-        run: ./mvnw clean package
\ No newline at end of file
+        run: ./mvnw clean package
diff --git a/login-registration-springboot-hibernate-jsp-auth/pom.xml b/login-registration-springboot-hibernate-jsp-auth/pom.xml
index a3a02b5c..a33a93ae 100644
--- a/login-registration-springboot-hibernate-jsp-auth/pom.xml
+++ b/login-registration-springboot-hibernate-jsp-auth/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/spring-aop-advice-examples/pom.xml b/spring-aop-advice-examples/pom.xml
index abe85714..cf73d5e9 100644
--- a/spring-aop-advice-examples/pom.xml
+++ b/spring-aop-advice-examples/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/spring-boot-crud-rest/pom.xml b/spring-boot-crud-rest/pom.xml
index 40903554..650f3aa0 100644
--- a/spring-boot-crud-rest/pom.xml
+++ b/spring-boot-crud-rest/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/spring-propertysource-example/pom.xml b/spring-propertysource-example/pom.xml
index b2952d45..522cbf50 100644
--- a/spring-propertysource-example/pom.xml
+++ b/spring-propertysource-example/pom.xml
@@ -13,7 +13,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot-angular8-helloworld-example/springboot-helloworld-application/pom.xml b/springboot-angular8-helloworld-example/springboot-helloworld-application/pom.xml
index fd201a0e..1e2dfbb9 100644
--- a/springboot-angular8-helloworld-example/springboot-helloworld-application/pom.xml
+++ b/springboot-angular8-helloworld-example/springboot-helloworld-application/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot-async-example/pom.xml b/springboot-async-example/pom.xml
index 5c8cdfed..d3a2b9a8 100644
--- a/springboot-async-example/pom.xml
+++ b/springboot-async-example/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot-crud-hibernate-example/pom.xml b/springboot-crud-hibernate-example/pom.xml
index 9089ca62..44f64c94 100644
--- a/springboot-crud-hibernate-example/pom.xml
+++ b/springboot-crud-hibernate-example/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>net.javaguides.springboot</groupId>
diff --git a/springboot-crud-rest-api-validation/pom.xml b/springboot-crud-rest-api-validation/pom.xml
index 82f71ab7..010d96a2 100644
--- a/springboot-crud-rest-api-validation/pom.xml
+++ b/springboot-crud-rest-api-validation/pom.xml
@@ -14,7 +14,7 @@
 		<parent>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-parent</artifactId>
-			<version>3.2.1</version>
+			<version>3.2.4</version>
 			<relativePath/> <!-- lookup parent from repository -->
 		</parent>
 	
diff --git a/springboot-hibernate-composite-key-demo/pom.xml b/springboot-hibernate-composite-key-demo/pom.xml
index cfc701fd..a60c31aa 100644
--- a/springboot-hibernate-composite-key-demo/pom.xml
+++ b/springboot-hibernate-composite-key-demo/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>net.javaguides</groupId>
diff --git a/springboot-hibernate-many-to-many-mapping/pom.xml b/springboot-hibernate-many-to-many-mapping/pom.xml
index 61c675f1..ee93c1ee 100644
--- a/springboot-hibernate-many-to-many-mapping/pom.xml
+++ b/springboot-hibernate-many-to-many-mapping/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>net.javaguides</groupId>
diff --git a/springboot-hibernate-one-many-mapping/pom.xml b/springboot-hibernate-one-many-mapping/pom.xml
index bb8d6cc3..909a541b 100644
--- a/springboot-hibernate-one-many-mapping/pom.xml
+++ b/springboot-hibernate-one-many-mapping/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>net.javaguides</groupId>
diff --git a/springboot-hibernate-one-one-mapping/pom.xml b/springboot-hibernate-one-one-mapping/pom.xml
index 6b69cd1d..3f1595d9 100644
--- a/springboot-hibernate-one-one-mapping/pom.xml
+++ b/springboot-hibernate-one-one-mapping/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>net.javaguides</groupId>
diff --git a/springboot-jpa-one-to-one-example/pom.xml b/springboot-jpa-one-to-one-example/pom.xml
index 02cf0ed6..37d9783a 100644
--- a/springboot-jpa-one-to-one-example/pom.xml
+++ b/springboot-jpa-one-to-one-example/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot-jsp-hello-world-example/pom.xml b/springboot-jsp-hello-world-example/pom.xml
index fd5af076..6344a285 100644
--- a/springboot-jsp-hello-world-example/pom.xml
+++ b/springboot-jsp-hello-world-example/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>net.javaguides</groupId>
diff --git a/springboot-mongodb-crud/pom.xml b/springboot-mongodb-crud/pom.xml
index 34d56718..c4ce6b66 100644
--- a/springboot-mongodb-crud/pom.xml
+++ b/springboot-mongodb-crud/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>net.springboot.javaguides</groupId>
diff --git a/springboot-mssql-jpa-hibernate-crud-example/pom.xml b/springboot-mssql-jpa-hibernate-crud-example/pom.xml
index e5c94701..90c12fb1 100644
--- a/springboot-mssql-jpa-hibernate-crud-example/pom.xml
+++ b/springboot-mssql-jpa-hibernate-crud-example/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from reposictory -->
 	</parent>
 
diff --git a/springboot-multiple-datasources/pom.xml b/springboot-multiple-datasources/pom.xml
index e8f72105..40c98b24 100644
--- a/springboot-multiple-datasources/pom.xml
+++ b/springboot-multiple-datasources/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot-postgresql-jpa-hibernate-crud-example/pom.xml b/springboot-postgresql-jpa-hibernate-crud-example/pom.xml
index e87e9313..63ce85e6 100644
--- a/springboot-postgresql-jpa-hibernate-crud-example/pom.xml
+++ b/springboot-postgresql-jpa-hibernate-crud-example/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from reposictory -->
 	</parent>
 
diff --git a/springboot-stomp-websocket/build.gradle b/springboot-stomp-websocket/build.gradle
index 392c6055..be77af2f 100644
--- a/springboot-stomp-websocket/build.gradle
+++ b/springboot-stomp-websocket/build.gradle
@@ -1,6 +1,6 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '3.2.1'
+	id 'org.springframework.boot' version '3.2.4'
 	id 'io.spring.dependency-management' version '1.1.4'
 }
 
diff --git a/springboot-stomp-websocket/pom.xml b/springboot-stomp-websocket/pom.xml
index 7dfaf94e..bfc4b636 100644
--- a/springboot-stomp-websocket/pom.xml
+++ b/springboot-stomp-websocket/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.2.1</version>
+        <version>3.2.4</version>
     </parent>
 
     <properties>
diff --git a/springboot-testing-examples/pom.xml b/springboot-testing-examples/pom.xml
index d23cb8bb..b9a61869 100644
--- a/springboot-testing-examples/pom.xml
+++ b/springboot-testing-examples/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot-thymeleaf-hello-world-example/pom.xml b/springboot-thymeleaf-hello-world-example/pom.xml
index fe49b02b..a94cd292 100644
--- a/springboot-thymeleaf-hello-world-example/pom.xml
+++ b/springboot-thymeleaf-hello-world-example/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>net.javaguides</groupId>
diff --git a/springboot-thymeleaf-security-demo/pom.xml b/springboot-thymeleaf-security-demo/pom.xml
index 09db448a..21183d03 100644
--- a/springboot-thymeleaf-security-demo/pom.xml
+++ b/springboot-thymeleaf-security-demo/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot-upload-download-file-database/pom.xml b/springboot-upload-download-file-database/pom.xml
index 861fa33e..c25406d2 100644
--- a/springboot-upload-download-file-database/pom.xml
+++ b/springboot-upload-download-file-database/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot-upload-download-file-rest-api-example/pom.xml b/springboot-upload-download-file-rest-api-example/pom.xml
index 92cafe9e..15744933 100644
--- a/springboot-upload-download-file-rest-api-example/pom.xml
+++ b/springboot-upload-download-file-rest-api-example/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-annotation-config/pom.xml b/springboot2-annotation-config/pom.xml
index 360df524..85916e28 100644
--- a/springboot2-annotation-config/pom.xml
+++ b/springboot2-annotation-config/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-externalizing-conf-properties/pom.xml b/springboot2-externalizing-conf-properties/pom.xml
index 524f4066..9dc1e28d 100644
--- a/springboot2-externalizing-conf-properties/pom.xml
+++ b/springboot2-externalizing-conf-properties/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-freemarker-example/pom.xml b/springboot2-freemarker-example/pom.xml
index fcd94799..e9a97395 100644
--- a/springboot2-freemarker-example/pom.xml
+++ b/springboot2-freemarker-example/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-java-config/pom.xml b/springboot2-java-config/pom.xml
index 6f05ddff..1ea2e74b 100644
--- a/springboot2-java-config/pom.xml
+++ b/springboot2-java-config/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-jdbc-crud-mysql-example/pom.xml b/springboot2-jdbc-crud-mysql-example/pom.xml
index 50686b79..c17d5b51 100644
--- a/springboot2-jdbc-crud-mysql-example/pom.xml
+++ b/springboot2-jdbc-crud-mysql-example/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-jms-activemq/pom.xml b/springboot2-jms-activemq/pom.xml
index 6c417c59..1420f4bb 100644
--- a/springboot2-jms-activemq/pom.xml
+++ b/springboot2-jms-activemq/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.2.1</version>
+        <version>3.2.4</version>
     </parent>
 
     <properties>
diff --git a/springboot2-jpa-auditing/pom.xml b/springboot2-jpa-auditing/pom.xml
index 0fac5e27..4b48ef51 100644
--- a/springboot2-jpa-auditing/pom.xml
+++ b/springboot2-jpa-auditing/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-jpa-crud-example/pom.xml b/springboot2-jpa-crud-example/pom.xml
index d09bca7a..9d30d20c 100644
--- a/springboot2-jpa-crud-example/pom.xml
+++ b/springboot2-jpa-crud-example/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-jpa-h2-crud-example/pom.xml b/springboot2-jpa-h2-crud-example/pom.xml
index cf99a189..f351156d 100644
--- a/springboot2-jpa-h2-crud-example/pom.xml
+++ b/springboot2-jpa-h2-crud-example/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-jpa-swagger3/pom.xml b/springboot2-jpa-swagger3/pom.xml
index 490c0fb7..90f9a719 100644
--- a/springboot2-jpa-swagger3/pom.xml
+++ b/springboot2-jpa-swagger3/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-junit5-example/pom.xml b/springboot2-junit5-example/pom.xml
index 09d87928..7d69ab65 100644
--- a/springboot2-junit5-example/pom.xml
+++ b/springboot2-junit5-example/pom.xml
@@ -15,7 +15,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.2.1</version>
+        <version>3.2.4</version>
         <relativePath /> <!-- lookup parent from repository -->
     </parent>
 
diff --git a/springboot2-logging/pom.xml b/springboot2-logging/pom.xml
index 4ea95ef5..0ddeff10 100644
--- a/springboot2-logging/pom.xml
+++ b/springboot2-logging/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-mybatis-mysql-example/pom.xml b/springboot2-mybatis-mysql-example/pom.xml
index 6f91e2bb..115bca4c 100644
--- a/springboot2-mybatis-mysql-example/pom.xml
+++ b/springboot2-mybatis-mysql-example/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-springaop-example/pom.xml b/springboot2-springaop-example/pom.xml
index abe85714..cf73d5e9 100644
--- a/springboot2-springaop-example/pom.xml
+++ b/springboot2-springaop-example/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-webapp-jsp-WAR/pom.xml b/springboot2-webapp-jsp-WAR/pom.xml
index a798752e..c00906d6 100644
--- a/springboot2-webapp-jsp-WAR/pom.xml
+++ b/springboot2-webapp-jsp-WAR/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-webapp-jsp/pom.xml b/springboot2-webapp-jsp/pom.xml
index e45319d3..dc960488 100644
--- a/springboot2-webapp-jsp/pom.xml
+++ b/springboot2-webapp-jsp/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-webapp-thymeleaf/pom.xml b/springboot2-webapp-thymeleaf/pom.xml
index c82f4295..fee7d502 100644
--- a/springboot2-webapp-thymeleaf/pom.xml
+++ b/springboot2-webapp-thymeleaf/pom.xml
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/springboot2-xml-config/pom.xml b/springboot2-xml-config/pom.xml
index 05d7d404..574a5874 100644
--- a/springboot2-xml-config/pom.xml
+++ b/springboot2-xml-config/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.2.1</version>
+		<version>3.2.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>