diff --git a/.github/workflows/deploy_docs.yml b/.github/workflows/deploy_docs.yml
index 90a3052..89f0e0d 100644
--- a/.github/workflows/deploy_docs.yml
+++ b/.github/workflows/deploy_docs.yml
@@ -11,7 +11,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.2
+      - uses: actions/checkout@v3.5.1
       - uses: ammaraskar/sphinx-action@master
         with:
           docs-folder: docs/
diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index 9a3c470..d2bb913 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -17,7 +17,7 @@ jobs:
         python-version: [ 3.7, 3.8 ]
 
     steps:
-      - uses: actions/checkout@v2.3.2
+      - uses: actions/checkout@v3.5.1
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2
         with:
@@ -36,7 +36,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2.3.2
+    - uses: actions/checkout@v3.5.1
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
@@ -59,7 +59,7 @@ jobs:
       - deploy
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.2
+      - uses: actions/checkout@v3.5.1
       - uses: ammaraskar/sphinx-action@master
         with:
           docs-folder: docs/
diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index bc5f5c6..da62ef6 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -16,7 +16,7 @@ jobs:
         python-version: [ 3.7, 3.8 ]
 
     steps:
-      - uses: actions/checkout@v2.3.2
+      - uses: actions/checkout@v3.5.1
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2
         with: