diff --git a/.github/workflows/publish-pypi.yml b/.github/workflows/publish-pypi.yml
index 823105d..ee2cb2e 100644
--- a/.github/workflows/publish-pypi.yml
+++ b/.github/workflows/publish-pypi.yml
@@ -15,7 +15,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
       with:
-        ref: main
+        ref: master
     - name: Set up Python 3.10
       uses: actions/setup-python@v4
       with: