diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index daa507b..651b92f 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -1,4 +1,4 @@
-name: "Close stale issues"
+name: Stale
 
 on:
   schedule:
@@ -12,5 +12,6 @@ jobs:
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-issue-message: 'This issue is stale because it has been open 21 days with no activity. Remove stale label or comment or this will be closed in 7 days.'
+        stale-pr-message: 'This pull request is stale because it has been open 21 days with no activity. Remove stale label or comment or this will be closed in 7 days.'
         days-before-stale: 21
         days-before-close: 7
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2a64a4b..8410c14 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -45,6 +45,11 @@ jobs:
 
     - run: npm test
 
+    - name: Check ncc
+      run: |
+        npm run build
+        test -z "$(git status --short)"
+
     - name: Upload test coverage
       uses: actions/upload-artifact@v1
       with:
diff --git a/.github/workflows/update-major-tag.yml b/.github/workflows/update-major-tag.yml
new file mode 100644
index 0000000..58554f0
--- /dev/null
+++ b/.github/workflows/update-major-tag.yml
@@ -0,0 +1,24 @@
+name: Update major tag
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  update:
+    runs-on: ubuntu-18.04
+    steps:
+
+    - uses: actions/checkout@v1
+
+    - name: Update major tag
+      if: github.event.release.prerelease == false
+      run: |
+        git config user.name "${GITHUB_ACTOR}"
+        git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
+        git remote set-url origin "https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${GITHUB_REPOSITORY}.git"
+        export TAG_NAME="${GITHUB_REF##refs/tags/}"
+        export TAG_MAJOR="${TAG_NAME%%.*}"
+        git tag "${TAG_MAJOR}" || git tag -d "${TAG_MAJOR}" ; git push origin ":refs/tags/${TAG_MAJOR}"
+        git tag "${TAG_MAJOR}" || true
+        git push --tags origin
diff --git a/__tests__/get-os.test.ts b/__tests__/get-os.test.ts
index d30e939..da4dad9 100644
--- a/__tests__/get-os.test.ts
+++ b/__tests__/get-os.test.ts
@@ -8,9 +8,6 @@ describe('getOS', () => {
   });
 
   test('test exception', () => {
-    // expect(() => {
-    //   getOS("win32");
-    // }).toThrowError("Windows is not supported");
     expect(() => {
       getOS('centos');
     }).toThrowError('centos is not supported');
diff --git a/__tests__/get-url.test.ts b/__tests__/get-url.test.ts
index 118a8f2..09bffe0 100644
--- a/__tests__/get-url.test.ts
+++ b/__tests__/get-url.test.ts
@@ -9,14 +9,11 @@ describe('getURL()', () => {
     const urlMacOS = `${baseURL}/hugo_0.58.2_macOS-64bit.tar.gz`;
     const urlWindows = `${baseURL}/hugo_0.58.2_Windows-64bit.zip`;
     expect(getURL('Linux', 'false', '0.58.2')).toBe(urlLinux);
+    expect(getURL('Linux', 'true', '0.58.2')).not.toBe(urlLinux);
+    expect(getURL('MyOS', 'false', '0.58.2')).not.toBe(urlLinux);
+    expect(getURL('Linux', 'false', '0.58.1')).not.toBe(urlLinux);
     expect(getURL('Linux', 'true', '0.58.2')).toBe(urlLinuxExtended);
     expect(getURL('macOS', 'false', '0.58.2')).toBe(urlMacOS);
     expect(getURL('Windows', 'false', '0.58.2')).toBe(urlWindows);
   });
-
-  // test("test exception", () => {
-  //   expect(() => {
-  //     getURL("Linux", "hoge", "0.58.2");
-  //   }).toThrowError("Invalid input (extended): hoge");
-  // });
 });
diff --git a/lib/index.js b/lib/index.js
index 6ca74b3..4f3b3a5 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -1907,7 +1907,7 @@ const get_latest_version_1 = __importDefault(__webpack_require__(307));
 const installer_1 = __importDefault(__webpack_require__(923));
 function run() {
     return __awaiter(this, void 0, void 0, function* () {
-        const dump = () => __awaiter(this, void 0, void 0, function* () {
+        const showVersion = () => __awaiter(this, void 0, void 0, function* () {
             yield exec.exec('hugo version');
         });
         try {
@@ -1917,7 +1917,7 @@ function run() {
                     return __awaiter(this, void 0, void 0, function* () {
                         console.log(`Hugo version: ${latestVersion} (${hugoVersion})`);
                         yield installer_1.default(latestVersion);
-                        yield dump();
+                        yield showVersion();
                     });
                 }, function (error) {
                     core.setFailed(error);
@@ -1926,7 +1926,7 @@ function run() {
             else {
                 console.log(`Hugo version: ${hugoVersion}`);
                 yield installer_1.default(hugoVersion);
-                yield dump();
+                yield showVersion();
             }
         }
         catch (error) {
diff --git a/src/get-os.ts b/src/get-os.ts
index ef9d50d..b94917a 100644
--- a/src/get-os.ts
+++ b/src/get-os.ts
@@ -5,7 +5,6 @@ export default function getOS(platform: string) {
     return 'macOS';
   } else if (platform === 'win32') {
     return 'Windows';
-    // throw new Error("Windows is not supported");
   } else {
     throw new Error(`${platform} is not supported`);
   }
diff --git a/src/index.ts b/src/index.ts
index b597dd1..3b3925d 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -5,8 +5,7 @@ import installer from './installer';
 
 // most @actions toolkit packages have async methods
 async function run() {
-  const dump = async () => {
-    // Show version
+  const showVersion = async () => {
     await exec.exec('hugo version');
   };
 
@@ -18,7 +17,7 @@ async function run() {
         async function(latestVersion): Promise<void> {
           console.log(`Hugo version: ${latestVersion} (${hugoVersion})`);
           await installer(latestVersion);
-          await dump();
+          await showVersion();
         },
         function(error) {
           core.setFailed(error);
@@ -27,7 +26,7 @@ async function run() {
     } else {
       console.log(`Hugo version: ${hugoVersion}`);
       await installer(hugoVersion);
-      await dump();
+      await showVersion();
     }
   } catch (error) {
     core.setFailed(error.message);