diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 9dfa7aa..0e2168e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -27,7 +27,7 @@ jobs:
         # need to run on mac.
         os: [ubuntu-latest, macos-latest]
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
@@ -121,7 +121,7 @@ jobs:
       # required for all workflows
       security-events: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
@@ -150,7 +150,7 @@ jobs:
     name: RiscV 64
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
@@ -183,7 +183,7 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with: