diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 16a6d52c02..4d97f92f1f 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -43,7 +43,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v1
+      uses: actions/checkout@v4
 
     - name: Install GFortran macOS
       if: contains(matrix.os, 'macos')
@@ -194,7 +194,7 @@ jobs:
       - build
     
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Download Artifacts
       uses: actions/download-artifact@v2
@@ -277,7 +277,7 @@ jobs:
       env:
         DEPLOY_BRANCH: ${{ secrets.DEPLOY_BRANCH && contains(github.ref, secrets.DEPLOY_BRANCH) && 1 || 0 }}
 
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       if: ${{ github.event_name == 'push' }}
 
     - name: Download Artifacts
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 2ecb4183a1..9cd7789e0f 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -6,7 +6,7 @@ jobs:
   build-and-deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - uses: actions/setup-python@v1
       with:
         python-version: '3.x'
diff --git a/.github/workflows/meta.yml b/.github/workflows/meta.yml
index 192214e373..be6a46dcb9 100644
--- a/.github/workflows/meta.yml
+++ b/.github/workflows/meta.yml
@@ -43,7 +43,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v1
+      uses: actions/checkout@v4
 
     - name: (Ubuntu) setup gcc version
       if: contains(matrix.os,'ubuntu')
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b4b030d5a9..b14537c8c5 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -17,7 +17,7 @@ jobs:
       FORMAT: ${{ matrix.format }}
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
@@ -44,7 +44,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
@@ -124,7 +124,7 @@ jobs:
       env:
         DEPLOY_BRANCH: ${{ secrets.DEPLOY_BRANCH && contains(github.ref, secrets.DEPLOY_BRANCH) && 1 || 0 }}
 
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       if: ${{ github.event_name == 'push' }}
 
     - name: Download Artifacts