diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index a1ecc821..b7297d5d 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -57,7 +57,7 @@ jobs:
           - shared: -DBUILD_SHARED_LIBS=ON
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
 
     - name: Set timezone
       run: sudo timedatectl set-timezone 'Asia/Yekaterinburg'