diff --git a/Dockerfile b/Dockerfile
index a2a590fe..2a713e9e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM adoptopenjdk:latest
+FROM adoptopenjdk:15-jre
 
 LABEL org.opencontainers.image.authors="Geoff Bourne <itzgeoff@gmail.com>"