diff --git a/.github/workflows/ci-cd.yml b/.github/workflows/ci-cd.yml
index 42e54f10..af080fa8 100644
--- a/.github/workflows/ci-cd.yml
+++ b/.github/workflows/ci-cd.yml
@@ -25,7 +25,7 @@ jobs:
         python-version: ["3.8", "3.9", "3.10"]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6c1ad602..54d2a33c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,7 +28,7 @@ jobs:
         python-version: ["3.8", "3.9", "3.10"]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
diff --git a/.github/workflows/pr_merge.yml b/.github/workflows/pr_merge.yml
index 5c46ec80..30586694 100644
--- a/.github/workflows/pr_merge.yml
+++ b/.github/workflows/pr_merge.yml
@@ -21,7 +21,7 @@ jobs:
         python-version: ["3.8", "3.9", "3.10"]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}