diff --git a/.github/workflows/link_check.yml b/.github/workflows/link_check.yml
index fa2f125..8f677e6 100644
--- a/.github/workflows/link_check.yml
+++ b/.github/workflows/link_check.yml
@@ -11,10 +11,10 @@ jobs:
   linkChecker:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: 🔗 Check Links
-        uses: lycheeverse/lychee-action@v1.10.0
+        uses: lycheeverse/lychee-action@2b973e86fc7b1f6b36a93795fe2c9c6ae1118621 # v1.10.0
         with:
           fail: true
           args: --config .github/workflows/lychee.toml './**/*.md'