diff --git a/.github/workflows/security-check.yml b/.github/workflows/security-check.yml
index 98916466..a05d13c7 100644
--- a/.github/workflows/security-check.yml
+++ b/.github/workflows/security-check.yml
@@ -11,10 +11,10 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
     
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@7f4fc3e22c37d6ff65e88745f38bd3157c663f7c # v4
       with:
         python-version: '3.9'