diff --git a/.github/workflows/ci_cd.yml b/.github/workflows/ci_cd.yml
index be2085d7..a40f1098 100644
--- a/.github/workflows/ci_cd.yml
+++ b/.github/workflows/ci_cd.yml
@@ -32,7 +32,7 @@ jobs:
     name: Code style
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
@@ -66,7 +66,7 @@ jobs:
 
     steps:
       - name: "Install Git and checkout project"
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
      
       - name: "Set up Python using cache"
         uses: actions/setup-python@v4
@@ -222,7 +222,7 @@ jobs:
     needs: [style, doc-build] #docs-style
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: actions/download-artifact@v3