diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 7e961f4..83c72c3 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
@@ -61,7 +61,7 @@ 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/deploy-sdist.yaml b/.github/workflows/deploy-sdist.yaml
index bcc71c1..4279d73 100644
--- a/.github/workflows/deploy-sdist.yaml
+++ b/.github/workflows/deploy-sdist.yaml
@@ -11,7 +11,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Create sdist
         shell: bash -l {0}