diff --git a/Dockerfile b/Dockerfile
index c74276c1..a221e7cf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM adoptopenjdk:16-jre
+FROM adoptopenjdk:11-jre
 
 LABEL org.opencontainers.image.authors="Geoff Bourne <itzgeoff@gmail.com>"