diff --git a/argocd/apps/tatort/tatort-dev.yaml b/argocd/apps/tatort/tatort-dev.yaml
index 3f7f546..083777b 100644
--- a/argocd/apps/tatort/tatort-dev.yaml
+++ b/argocd/apps/tatort/tatort-dev.yaml
@@ -8,7 +8,7 @@ spec:
   project: default
   source:
     repoURL: 'https://gitea.innovation-hub-niedersachsen.de/innohub/charts/raw/main/tatort'
-    targetRevision: 0.*-dev.1
+    targetRevision: "0.*-dev.1"
     helm:
       parameters:
         - name: ingress.enabled