diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 2337df7..3959cb0 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -12,7 +12,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
       - name: Build
         run: cargo build --verbose
       - name: Check formatting