diff --git a/.github/workflows/test-contract.yml b/.github/workflows/test-contract.yml
index f0e2da7..47c9cac 100644
--- a/.github/workflows/test-contract.yml
+++ b/.github/workflows/test-contract.yml
@@ -11,10 +11,7 @@ on:
 
 jobs:
   test:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ubuntu-latest
 
     steps:
       - name: Checkout repository
@@ -23,19 +20,19 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: "18"
+          node-version: "20"
 
       - name: Install dependencies
         run: npm install
-        working-directory: ./toban/pkgs/contract
+        working-directory: ./pkgs/contract
 
       - name: Run Hardhat tests
         run: npx hardhat test
-        working-directory: ./toban/pkgs/contract
+        working-directory: ./pkgs/contract
 
       # ガスレポートをアーティファクトとして保存
       - name: Upload Gas Report
         uses: actions/upload-artifact@v3
         with:
           name: gas-report
-          path: ./toban/pkgs/contract/gas-report.txt
+          path: ./pkgs/contract/gas-report.txt