diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index aec7c0f..ff294f7 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -19,7 +19,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - name: upgrade
       run: rustup override set nightly
     - name: nightly-clippy