diff --git a/.github/workflows/upload_to_pypi.yml b/.github/workflows/upload_to_pypi.yml
index 1ddf6e31d..6ab65e0bb 100644
--- a/.github/workflows/upload_to_pypi.yml
+++ b/.github/workflows/upload_to_pypi.yml
@@ -8,9 +8,9 @@ jobs:
   upload:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout
+    - uses: actions/checkout@v2
     - name: Set up Python
-      uses: actions/setup-python
+      uses: actions/setup-python@v2
       with:
         python-version: '3.8'
     - name: Install dependencies