diff --git a/.github/workflows/pypi-nightly.yaml b/.github/workflows/pypi-nightly.yaml
index 0ed73de..7ebf727 100644
--- a/.github/workflows/pypi-nightly.yaml
+++ b/.github/workflows/pypi-nightly.yaml
@@ -13,9 +13,9 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
     - name: Set up Python
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@0f07f7f756721ebd886c2462646a35f78a8bc4de # v1
       with:
         python-version: '3.x'
     - name: Install dependencies
diff --git a/.github/workflows/pypi.yaml b/.github/workflows/pypi.yaml
index 36af740..17ec3a6 100644
--- a/.github/workflows/pypi.yaml
+++ b/.github/workflows/pypi.yaml
@@ -11,9 +11,9 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
     - name: Set up Python
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@0f07f7f756721ebd886c2462646a35f78a8bc4de # v1
       with:
         python-version: '3.x'
     - name: Install dependencies