diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 496cf695..65e1a281 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: set up python
         uses: actions/setup-python@v5
@@ -39,7 +39,7 @@ jobs:
 
     runs-on: ${{ matrix.os }}-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: set up python
         uses: actions/setup-python@v5
@@ -80,7 +80,7 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: set up python
         uses: actions/setup-python@v5