diff --git a/.github/workflows/container-tests.yml b/.github/workflows/container-tests.yml
index 90639570..fb67dbc0 100644
--- a/.github/workflows/container-tests.yml
+++ b/.github/workflows/container-tests.yml
@@ -12,10 +12,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4.1.4
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
 
       - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
         with:
           node-version: 20.8.1
 
diff --git a/.github/workflows/deploy-to-firebase.yml b/.github/workflows/deploy-to-firebase.yml
index a2e23a90..9d7c2a00 100644
--- a/.github/workflows/deploy-to-firebase.yml
+++ b/.github/workflows/deploy-to-firebase.yml
@@ -13,10 +13,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4.1.4
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
 
       - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
         with:
           node-version: 20.8.1
 
@@ -30,7 +30,7 @@ jobs:
         run: REACT_APP_CONFIG=preview PUBLIC_URL=/ yarn build
 
       - name: Deploy
-        uses: FirebaseExtended/action-hosting-deploy@v0
+        uses: FirebaseExtended/action-hosting-deploy@e2eda2e106cfa35cdbcf4ac9ddaf6c4756df2c8c # v0.10.0
         with:
           repoToken: "${{ secrets.GITHUB_TOKEN }}"
           firebaseServiceAccount: "${{ secrets.FIREBASE_SERVICE_ACCOUNT_SLIM }}"
diff --git a/.github/workflows/deploy-to-github-pages.yml b/.github/workflows/deploy-to-github-pages.yml
index 01dd6629..4ee4d5ce 100644
--- a/.github/workflows/deploy-to-github-pages.yml
+++ b/.github/workflows/deploy-to-github-pages.yml
@@ -12,10 +12,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout to repository
-        uses: actions/checkout@v4.1.4
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
 
       - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
         with:
           node-version: 20.8.1
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 116146ef..94b9709c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -11,13 +11,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4.1.4
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
         with:
           ref: master
           persist-credentials: false
 
       - name: Setup node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
         with:
           node-version: 20.8.1
 
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 7a4a11cf..def7aaac 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -12,10 +12,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4.1.4
+        uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
 
       - name: Setup Node
-        uses: actions/setup-node@v4.0.2
+        uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
         with:
           node-version: 20.8.1