diff --git a/.woodpecker/build.yaml b/.woodpecker/build.yaml
index 6b75c06..145a02e 100644
--- a/.woodpecker/build.yaml
+++ b/.woodpecker/build.yaml
@@ -11,7 +11,7 @@ steps:
           password: {from_secret: kokuwa_io_password}
       platform: [linux/amd64, linux/arm64]
       build-args:
-        NPM_CONFIG_REGISTRY: # reused from ci env
+        NPM_CONFIG_REGISTRY: $NPM_CONFIG_REGISTRY
         FOO: bar 
       annotation:
         org.opencontainers.image.title: Buildctl WoodpeckerCI Plugin