diff --git a/.drone.yml b/.drone.yml
index 5ec553c..e566184 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -65,7 +65,7 @@ steps:
         - GRADLE_VERSION
         - JAVA_VERSION
       build_args:
-        CRE_VERSION: *release
+        - CRE_VERSION: *release
       repo: *docker-registry-repo
     when:
       branch: release/**