diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index 4970efb..d092f4c 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -46,6 +46,6 @@ jobs:
           context: .
           push: true
           build-args: |
-            ENVIRONMENT=${GITHUB_REF##*/}
+            ENVIRONMENT=${{GITHUB_REF##*/}}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
\ No newline at end of file