diff --git a/classic-java-11/Dockerfile b/classic-java-11/Dockerfile
index 1c29c5d..ddfa587 100644
--- a/classic-java-11/Dockerfile
+++ b/classic-java-11/Dockerfile
@@ -1,4 +1,4 @@
-FROM azul/zulu-openjdk-alpine:11.0.21@sha256:b091fbc520d534840e00e2bda6bbb08a7342806970994fba998ba0d4164f2b31
+FROM azul/zulu-openjdk-alpine:11.0.21@sha256:b76ef3965b6b0529f756ad1835722a5bbd1fc8297e4623c692f45da629e899ee
 
 # py3-paramiko and py3-cffi is for docker compose installed later
 # see https://github.com/docker/compose/issues/6617#issuecomment-478662098