diff --git a/jplag.Dockerfile b/jplag.Dockerfile
index 58209c7eaa..58c6a3e3d5 100644
--- a/jplag.Dockerfile
+++ b/jplag.Dockerfile
@@ -1,10 +1,10 @@
-FROM alpine:3.22.1
+FROM eclipse-temurin:25-jre-alpine
 
-ENV JPLAG_VERSION=6.2.0
+ENV JPLAG_VERSION=6.3.0
 WORKDIR /jplag
 
 RUN apk update && \
-  apk add --no-cache bash openjdk21 wget && \
+  apk add --no-cache bash wget && \
   wget -O jplag-jar-with-dependencies.jar \
   https://github.com/jplag/JPlag/releases/download/v$JPLAG_VERSION/jplag-$JPLAG_VERSION-jar-with-dependencies.jar