diff --git a/.github/workflows/semgrep.yml b/.github/workflows/semgrep.yml
index c96c45c..2d32e12 100644
--- a/.github/workflows/semgrep.yml
+++ b/.github/workflows/semgrep.yml
@@ -23,7 +23,7 @@ jobs:
       image: returntocorp/semgrep
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
 
       - run: semgrep ci
         env: