diff --git a/.github/workflows/publish-to-pypi.yml b/.github/workflows/publish-to-pypi.yml
index 6e1086c..3d8bf58 100644
--- a/.github/workflows/publish-to-pypi.yml
+++ b/.github/workflows/publish-to-pypi.yml
@@ -1,6 +1,9 @@
 name: Publish Python distribution to PyPI
 
-on: push
+on:
+  push:
+    branches:
+      - 'main'
 
 jobs:
   build-and-publish-to-pypi:
@@ -30,4 +33,4 @@ jobs:
     - name: Publish Python distribution to PyPI
       uses: pypa/gh-action-pypi-publish@release/v1
       with:
-        password: ${{ secrets.PYPI_API_TOKEN }}
\ No newline at end of file
+        password: ${{ secrets.PYPI_API_TOKEN }}