diff --git a/.github/workflows/pythonpublish.yml b/.github/workflows/pythonpublish.yml
index 0e3767f..52f183f 100644
--- a/.github/workflows/pythonpublish.yml
+++ b/.github/workflows/pythonpublish.yml
@@ -55,6 +55,7 @@ jobs:
 
   publish-to-testpypi:
     name: Publish Python 🐍 distribution 📦 to TestPyPI
+    if: ! startsWith(github.ref, 'refs/tags/')  # Don't publish tagged releases in TestPyPI
     needs:
     - build
     runs-on: ubuntu-latest