diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index e63105d..80ac944 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -23,7 +23,7 @@ jobs:
     #-----------------------------------------------
     #  -----  checkout repo and set-up python  -----
     #-----------------------------------------------    
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
       with:
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index aeaadb5..60a21a6 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -38,7 +38,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 73770e4..c32899d 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -11,7 +11,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Build and publish to pypi
         uses: JRubics/poetry-publish@v1.16
         with: