diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 07669c5..807aaa1 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -27,7 +27,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v1
diff --git a/.github/workflows/pylint.yml b/.github/workflows/pylint.yml
index e45a0af..3871889 100644
--- a/.github/workflows/pylint.yml
+++ b/.github/workflows/pylint.yml
@@ -6,7 +6,7 @@ jobs:
   PEP8:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup Python
         uses: actions/setup-python@v2.3.0
diff --git a/.github/workflows/pythonapp.yml b/.github/workflows/pythonapp.yml
index 61c3ccc..f460713 100644
--- a/.github/workflows/pythonapp.yml
+++ b/.github/workflows/pythonapp.yml
@@ -12,7 +12,7 @@ jobs:
         python-version: [3.9.x]
 
     steps:
-      - uses: actions/checkout@master
+      - uses: actions/checkout@v3
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2.3.0