diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6c86ae2..882a556 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -28,7 +28,7 @@ jobs:
             env: py38-salt3001
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - uses: pdm-project/setup-pdm@v3
         with:
           python-version: ${{ matrix.python }}
@@ -38,7 +38,7 @@ jobs:
   black:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - uses: pdm-project/setup-pdm@v3
         with:
           python-version: "3.11"