diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d2532a0..e71d6b3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,11 +12,11 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v6
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       with:
         fetch-depth: 0
     - name: Setup Nodejs
-      uses: actions/setup-node@v6
+      uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
       with:
         node-version-file: '.nvmrc'
     - name: Install dependencies
@@ -30,7 +30,7 @@ jobs:
     - name: i18n_extract
       run: npm run i18n_extract
     - name: Coverage
-      uses: codecov/codecov-action@v6
+      uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 # v6.0.0
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         fail_ci_if_error: true