diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5ceb627..0daf36f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,7 +14,7 @@ jobs:
             python-version: 3.8
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python 3.7
       uses: actions/setup-python@v3
       with:
diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index 76c926e..6aa9fb5 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -6,10 +6,10 @@ jobs:
   format:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           ref: ${{ github.head_ref }}
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Set up Python 3.7
         uses: actions/setup-python@v3
         with:
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1557cb5..8633191 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -14,7 +14,7 @@ jobs:
             python-version: 3.8
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python 3.7
       uses: actions/setup-python@v3
       with:
@@ -54,7 +54,7 @@ jobs:
           - os: macos-latest
             python-version: 3.8
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Set up Python 3.7
         uses: actions/setup-python@v3
         with: