diff --git a/Backend/Dockerfile b/Backend/Dockerfile
index 8f69ed77..c4a33807 100644
--- a/Backend/Dockerfile
+++ b/Backend/Dockerfile
@@ -5,7 +5,7 @@ COPY src /usr/src/app/src
 COPY pom.xml /usr/src/app
 RUN mvn -f /usr/src/app/pom.xml clean package
 
-FROM amazoncorretto:17-alpine3.16-full
+FROM amazoncorretto:21-alpine3.16-full
 ARG JAR_FILE=/usr/src/app/target/*.jar
 COPY --from=build ${JAR_FILE} /usr/app/Ree6-Webinterface.jar
 EXPOSE 8888/tcp