diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6c1874b..25aa777 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
     # install deps
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: install debian-packaged dependencies
       run: sudo apt install -y jq clang-format graphviz libgoogle-perftools-dev libunwind-dev libgtest-dev
 
diff --git a/.github/workflows/pypi-release.yml b/.github/workflows/pypi-release.yml
index 5c8d5cc..f1783fb 100644
--- a/.github/workflows/pypi-release.yml
+++ b/.github/workflows/pypi-release.yml
@@ -9,7 +9,7 @@ jobs:
         steps:
 
         # setup python
-        - uses: actions/checkout@v4
+        - uses: actions/checkout@v5
         - name: set up Python
           uses: actions/setup-python@v5
           with: