diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7ff9e4e..316a626 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,18 +9,26 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+        with:
+          version: 9
       - run: |
-          npm install
-          npm run check:ci
+          pnpm install
+          pnpm check:ci
 
   spell:
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+        with:
+          version: 9
       - run: |
-          npm install
-          npm run spell
+          pnpm install
+          pnpm spell
 
   build:
     needs: [check, spell]
@@ -28,6 +36,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+        with:
+          version: 9
       - run: |
-          npm install
-          npm run build
+          pnpm install
+          pnpm build
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 72c9908..352bc13 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -11,9 +11,13 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+        with:
+          version: 9
       - run: |
-          npm install
-          npm run build
+          pnpm install
+          pnpm build
       
       - uses: FirebaseExtended/action-hosting-deploy@v0
         with:
diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index 06a4d74..9a56aca 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -17,9 +17,13 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+        with:
+          version: 9
       - run: |
-          npm install
-          npm run build
+          pnpm install
+          pnpm build
       
       - uses: FirebaseExtended/action-hosting-deploy@v0
         with:
@@ -101,9 +105,12 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install and Build
-        run: |
-          npm install
-          npm run build
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9
+      - run: |
+          pnpm install
+          pnpm build
 
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3