diff --git a/maintainer/docker_build.sh b/maintainer/docker_build.sh
index 80da326..3ea364e 100755
--- a/maintainer/docker_build.sh
+++ b/maintainer/docker_build.sh
@@ -25,4 +25,4 @@ else
     dest=test/$job_name-$CI_COMMIT_SHA
 fi
 
-cmd "/kaniko/executor --context $PWD --dockerfile Dockerfile-$docker_tag* --destination $CI_REGISTRY/$CI_PROJECT_PATH/$dest"
+cmd "/kaniko/executor --context $PWD --dockerfile Dockerfile-$docker_tag* --destination $CI_REGISTRY/$CI_PROJECT_PATH/$dest --cache=true --cache-repo $CI_REGISTRY/$CI_PROJECT_PATH/cache"
diff --git a/maintainer/docker_clean.sh b/maintainer/docker_clean.sh
index afa5358..69b7f56 100755
--- a/maintainer/docker_clean.sh
+++ b/maintainer/docker_clean.sh
@@ -8,3 +8,8 @@ for repo_id in $(curl -Ls --header "PRIVATE-TOKEN: $CI_JOB_TOKEN" https://$CI_SE
     curl -Ls --request DELETE --data 'name_regex=.+' --data 'older_than=7d' --header "PRIVATE-TOKEN: $CI_JOB_TOKEN" "https://$CI_SERVER_HOST/api/v4/projects/$CI_PROJECT_ID/registry/repositories/$repo_id/tags" | jq
 done
 
+# same for the cache repo
+repo_id=$(curl -Ls --header "PRIVATE-TOKEN: $CI_JOB_TOKEN" https://$CI_SERVER_HOST/api/v4/projects/$CI_PROJECT_ID/registry/repositories | jq -r '.[] | select(.name == "test/cuda") | [.id] | @tsv')
+# delete all tags older than 30 days
+curl -Ls --request DELETE --data 'name_regex=.+' --data 'older_than=30d' --header "PRIVATE-TOKEN: $CI_JOB_TOKEN" "https://$CI_SERVER_HOST/api/v4/projects/$CI_PROJECT_ID/registry/repositories/$repo_id/tags" | jq
+