diff --git a/configserver/pom.xml b/configserver/pom.xml
index 9eacf00..a73c95c 100644
--- a/configserver/pom.xml
+++ b/configserver/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.4.2</version>
+		<version>2.5.3</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.microservices.example</groupId>
diff --git a/discovery/pom.xml b/discovery/pom.xml
index b9f6501..a9bcd01 100644
--- a/discovery/pom.xml
+++ b/discovery/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.4.2</version>
+		<version>2.5.3</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.microservices.example</groupId>
diff --git a/oauthserver/pom.xml b/oauthserver/pom.xml
index ecf6da1..8e71e0b 100644
--- a/oauthserver/pom.xml
+++ b/oauthserver/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.4.2</version>
+		<version>2.5.3</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.microservices.example</groupId>
diff --git a/ocrservice/pom.xml b/ocrservice/pom.xml
index 11d13f7..7ddc7f5 100644
--- a/ocrservice/pom.xml
+++ b/ocrservice/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.4.2</version>
+		<version>2.5.3</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.microservices.example</groupId>
diff --git a/proxy/pom.xml b/proxy/pom.xml
index 587fdc9..340ac93 100644
--- a/proxy/pom.xml
+++ b/proxy/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.4.2</version>
+		<version>2.5.3</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.microservices.example</groupId>