diff --git a/Dockerfile b/Dockerfile
index 3fd77ac..43deaba 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/library/eclipse-temurin:17-jre
+FROM docker.io/library/eclipse-temurin:21-jre
 LABEL maintainer="Andrew Gaul <andrew@gaul.org>"
 
 WORKDIR /opt/s3proxy