diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 54218d03f..ab4e1e4ca 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -184,10 +184,10 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
     - name: Install Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
       with:
         go-version: ${{ matrix.GO_SEMVER }}
         check-latest: true
@@ -239,7 +239,7 @@ jobs:
         find . -name *.hurl -exec hurl --jobs 1 --variables-file caddytest/spec/hurl_vars.properties --very-verbose --verbose --test --report-junit hurl-report/junit.xml --color {} \;
     
     - name: Publish Test Results
-      uses: EnricoMi/publish-unit-test-result-action@v2
+      uses: EnricoMi/publish-unit-test-result-action@3a74b2957438d0b6e2e61d67b05318aa25c9e6c6 # v2.20.0
       with:
         files: |
           hurl-report/junit.xml
@@ -253,7 +253,7 @@ jobs:
 
 
     - name: Publish Coverage Profile
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
       with:
         path: hurl-report/caddy_cover_${{ steps.vars.outputs.short_sha }}.html
         compression-level: 0