diff --git a/.github/workflows/test_openmm_dmff_plugin.yml b/.github/workflows/test_openmm_dmff_plugin.yml
index a8b7a3c86..c1f388851 100644
--- a/.github/workflows/test_openmm_dmff_plugin.yml
+++ b/.github/workflows/test_openmm_dmff_plugin.yml
@@ -11,7 +11,7 @@ jobs:
       matrix:
         python-version: [3.9]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v5
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2
         with:
diff --git a/.github/workflows/ut.yml b/.github/workflows/ut.yml
index cb794053d..658c6141b 100644
--- a/.github/workflows/ut.yml
+++ b/.github/workflows/ut.yml
@@ -11,7 +11,7 @@ jobs:
       matrix:
         python-version: [3.9]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v5
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2
         with: