diff --git a/docker-service.gradle b/docker-service.gradle
index 8468175b..65db7a16 100644
--- a/docker-service.gradle
+++ b/docker-service.gradle
@@ -1,5 +1,5 @@
 ext {
-    dockerImage='openjdk:17-slim'
+    dockerImage='openjdk:20-slim'
     serviceJvmOpts='-Dservice-host=0.0.0.0 -ea ${wmsa_jvm_param} -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=4000 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false'
     serviceToolOpts='-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5000'
 }