diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 045bb50..fca9054 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -21,15 +21,15 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
 
       - name: Setup Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5
         with:
           go-version: '1.23'
 
       - name: Cache Go modules
-        uses: actions/cache@v4
+        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4
         with:
           path: |
             ~/.cache/go-build
@@ -45,7 +45,7 @@ jobs:
           args: '-fmt sarif -out gosec-results.sarif ./...'
 
       - name: Upload gosec results to GitHub Security tab
-        uses: github/codeql-action/upload-sarif@v3
+        uses: github/codeql-action/upload-sarif@df559355d593797519d70b90fc8edd5db049e7a2 # v3
         if: always()
         with:
           sarif_file: gosec-results.sarif
@@ -118,21 +118,21 @@ jobs:
       # SAST with CodeQL (if available)
       - name: Initialize CodeQL
         if: github.event_name != 'schedule'
-        uses: github/codeql-action/init@v3
+        uses: github/codeql-action/init@df559355d593797519d70b90fc8edd5db049e7a2 # v3
         with:
           languages: go
 
       - name: Autobuild
         if: github.event_name != 'schedule'
-        uses: github/codeql-action/autobuild@v3
+        uses: github/codeql-action/autobuild@df559355d593797519d70b90fc8edd5db049e7a2 # v3
 
       - name: Perform CodeQL Analysis
         if: github.event_name != 'schedule'
-        uses: github/codeql-action/analyze@v3
+        uses: github/codeql-action/analyze@df559355d593797519d70b90fc8edd5db049e7a2 # v3
 
       # Upload artifacts for review
       - name: Upload security scan results
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         if: always()
         with:
           name: security-scan-results