diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 401e091..0c6fefa 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,7 +8,7 @@ jobs:
         os: [ubuntu-22.04, windows-2022, macos-12]
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - name: Format
       run: cargo fmt -- --check
     - name: Lint