diff --git a/compose.yaml b/compose.yaml
index 7416af4..aaa465f 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -1,25 +1,23 @@
-version: "3"
 services:
-    jenkins:
-        container_name: jenkins
-        image: jenkins/jenkins:alpine
-        restart: always
-        environment:
-        - "TZ=Europe/Berlin"
-        - "JAVA_OPTS=-Xmx256M -Xms256M"
-        ports:
-        - "127.0.0.1:8081:8080"
-        volumes:
-        - "/opt/jenkins:/var/jenkins_home"
-        links:
-        - jenkins-agent
-
+  jenkins:
+    container_name: jenkins
+    image: jenkins/jenkins:alpine-jdk21
+    restart: always
+    environment:
+      - "TZ=Europe/Berlin"
+      - "JAVA_OPTS=-Xmx256M -Xms256M"
+    ports:
+      - "127.0.0.1:8081:8080"
+    volumes:
+      - "/opt/jenkins:/var/jenkins_home"
+    links:
+      - jenkins-agent
     jenkins-agent:
-        container_name: jenkins-agent
-        image: zoeyvid/jenkins-ssh-agent
-        restart: always
-        environment:
+      container_name: jenkins-agent
+      image: zoeyvid/jenkins-ssh-agent
+      restart: always
+      environment:
         - "TZ=Europe/Berlin"
         - "JENKINS_AGENT_SSH_PUBKEY=ssh-rsa ABCDEFGHIJKLMNOPQRSTUVWXYZ"
-#        volumes:
+#      volumes:
 #        - "/var/run/docker.sock:/var/run/docker.sock:ro"