diff --git a/Dockerfile b/Dockerfile
index d7eb5b1..ddcf935 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,7 @@ ADD . .
 RUN mvn package
 
 
-FROM eclipse-temurin:17-jdk-alpine
+FROM eclipse-temurin:21-jdk-alpine
 
 WORKDIR /backend
 COPY --from=builder /build/target/swa-jodel-backend.jar .