diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 71b5019..e90f0b6 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -12,9 +12,9 @@ jobs:
       contents: read
       packages: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
         with:
           node-version: '20'
           registry-url: 'https://npm.pkg.github.com'
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 37a3bcc..3c06455 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,10 +11,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
     - name: Set up Node.js
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
       with:
         node-version: '20'
 
diff --git a/.github/workflows/update-glossary.yml b/.github/workflows/update-glossary.yml
index ab4e998..fcdd34c 100644
--- a/.github/workflows/update-glossary.yml
+++ b/.github/workflows/update-glossary.yml
@@ -22,11 +22,11 @@ jobs:
       contents: write
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
         with:
           node-version: '20'