diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b6558c2bd2bb76d437487576ad194269b1ac9170..f02fc15910555dc17fcadb2d30590e788bd66f90 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -15,4 +15,4 @@ build:
     script:
         - python publish_images.py
     tags:
-        docker
+        - docker