diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index ccec29b..19c0014 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python 3.11
         uses: actions/setup-python@v4
@@ -39,7 +39,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup conda environment
         uses: conda-incubator/setup-miniconda@v2
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5a37998..fd2a7a0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,7 +6,7 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
       - uses: pre-commit/action@v3.0.0
 
@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup conda environment
         uses: conda-incubator/setup-miniconda@v2