diff --git a/Dockerfile b/Dockerfile
index 09b53be..dc1307a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 # that we have a shell present to expand wildcards etc.
 FROM mrothy/scalafmt:2.3.2 as scalafmt
 
-FROM eclipse-temurin:11-jre
+FROM eclipse-temurin:21-jre
 
 COPY --from=scalafmt /usr/local/bin/scalafmt /usr/local/bin/scalafmt
 COPY entrypoint.sh /entrypoint.sh