diff --git a/.github/workflows/registry_upload.yml b/.github/workflows/registry_upload.yml
index e419ab23..e14fa0f5 100644
--- a/.github/workflows/registry_upload.yml
+++ b/.github/workflows/registry_upload.yml
@@ -63,7 +63,7 @@ jobs:
           # type=pep440 will only run on main branch, when there is a semantic tag added to a commit.
           # pep440 is same as semver but also accept tags without the v in front.
           tags: |
-            type=ref,event=tag,enable={{!is_default_branch}}
+            type=ref,event=tag,enable={{is_default_branch != true}}
             type=pep440,pattern={{version}},enable={{is_default_branch}}
 
       - name: Install just