diff --git a/.github/workflows/shellcheck.yml b/.github/workflows/shellcheck.yml
index 04bb575..a348af1 100644
--- a/.github/workflows/shellcheck.yml
+++ b/.github/workflows/shellcheck.yml
@@ -8,6 +8,6 @@ jobs:
     name: Shellcheck
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
     - name: Run ShellCheck
-      uses: ludeeus/action-shellcheck@master
\ No newline at end of file
+      uses: ludeeus/action-shellcheck@00cae500b08a931fb5698e11e79bfbd38e612a38 # v2.0.0