diff --git a/.forgejo/workflows/build.yml b/.forgejo/workflows/build.yml
index 76e6c0f..62b975b 100644
--- a/.forgejo/workflows/build.yml
+++ b/.forgejo/workflows/build.yml
@@ -35,4 +35,4 @@ jobs:
           build-args: |
             PG_MAJOR_VERSION=${{ matrix.PG_MAJOR_VERSION }}
             DEB_RELEASE=${{ matrix.DEB_RELEASE }}
-            FMT_DATE={{ date 'YYYY-MM-DD' }}
+            FMT_DATE=${{ date 'YYYY-MM-DD' }}