diff --git a/.woodpecker.yml b/.woodpecker.yml
index 5e8038f..f857b81 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -24,7 +24,7 @@ steps:
       dockerfile: apps/${APP}/Dockerfile
     when:
       matrix:
-        APP: [ ui, api, abstraction, rules ]
+        APP: [ "ui", "api", "abstraction", "rules" ]
       event: [push, tag]
       ref:
         exclude: