diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0a983723ca8f9be6d27c395f85d445a44d7a317e..724f2291abac85ffe5d9f4c8804571938b0ebc28 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -44,7 +44,7 @@ build_vollt_base_war:
   stage: build_base_war
   tags:
     - docker
-  image: gradle:jdk8
+  image: gradle:6-jdk8
   only:
     refs:
       - master
diff --git a/private-rows-extension/Dockerfile-build-env b/private-rows-extension/Dockerfile-build-env
index acf67b3518c32c0190ac5d4ff8eae7d44384a3e4..e4b5bf11bab805bc398bfb55db6a9826505327cf 100644
--- a/private-rows-extension/Dockerfile-build-env
+++ b/private-rows-extension/Dockerfile-build-env
@@ -1,2 +1,2 @@
-FROM gradle:jdk8
+FROM gradle:6-jdk8
 RUN apt-get update && apt install -y openjdk-17-jdk maven