diff --git a/.woodpecker.yml b/.woodpecker.yml
index cd51772..80dd9be 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -5,7 +5,7 @@ steps:
     settings:
       registry: https://git.sandbox.iuk.hdm-stuttgart.de
       repo: git.sandbox.iuk.hdm-stuttgart.de/grosse/jupyterhub
-      tags: 2.0.0
+      tags: "2.0.0"
 	  cache: false
       dockerfile: Dockerfile
       username: