diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ed2e797d36bfb66355ab0d7c328485b5b2f536eb..684c7f5988482d60b5bf237e838e22c3cccba27e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -15,6 +15,6 @@ build:
   stage: build
   script:
     - apk update ; apk add git
-    - git checkout master
+    - git checkout master --
     - docker build --pull -t "$CI_REGISTRY_IMAGE:testing-ubuntu" .
     - docker push "$CI_REGISTRY_IMAGE:testing-ubuntu"