diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a42d473b..1726eb19 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -14,7 +14,7 @@ assets:
   - "git config --global user.email \"${GIT_USER_EMAIL:-$GITLAB_USER_EMAIL}\""
   - "git config --global user.name \"${GIT_USER_NAME:-$GITLAB_USER_NAME}\""
   - "git remote set-url --push origin \"https://${GITLAB_USERNAME}:${GITLAB_TOKEN}@${CI_SERVER_HOST}/${CI_PROJECT_PATH}.git\""
-  - "apk add dotenv brotli go-task"
+  - "apk add brotli go-task diffutils"
   script:
   - "go-task assets"
   after_script: