diff --git a/.woodpecker.yml b/.woodpecker.yml
index 86c8280..bcdb298 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -7,7 +7,7 @@ steps:
       registry: git.sandbox.iuk.hdm-stuttgart.de
       repository: grosse/jupyterlab-datascience
       tag: 4.0.12c
-      architectures: [amd64, aarch64]
+      architectures: "amd64, aarch64"
       context: Dockerfile
       imagename: jupyterlab-datascience
       username: