diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3e88b72b..32e5fde6 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
         python-version: ["3.7", "3.8", "3.12"]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     # set up conda
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
diff --git a/.github/workflows/test_import.yml b/.github/workflows/test_import.yml
index b04d05cd..9f1f7d8e 100644
--- a/.github/workflows/test_import.yml
+++ b/.github/workflows/test_import.yml
@@ -8,7 +8,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - uses: actions/setup-python@v2
       with:
         python-version: '3.9'