diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3eddd7239b341466b7d84653c409e7d01258e04c..35acd847645de44fe7993b4cb5290faf2da5d297 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -117,7 +117,7 @@ create_release:
 clangBuildAnalyzer:
   stage: test
 
-  only: schedules
+  only: ["schedules"]
 
   before_script:
     - export DEBIAN_FRONTEND=noninteractive
@@ -147,7 +147,7 @@ clangBuildAnalyzer:
 include_what_you_use:
   stage: test
 
-  only: schedules
+  only: ["schedules"]
 
   before_script:
     - export DEBIAN_FRONTEND=noninteractive