diff --git a/README.md b/README.md
index c163901..d77291d 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ Firefox by WebExtensions API.
 - [ ] navigations
   - [ ] yank/paste page
   - [x] pagenation
-  - [ ] open parent page
+  - [x] open parent page
 - [ ] hints
   - [x] open a link
   - [ ] open a link in new tab
diff --git a/src/background/keys.js b/src/background/keys.js
index 2549c8d..992b42d 100644
--- a/src/background/keys.js
+++ b/src/background/keys.js
@@ -32,6 +32,7 @@ const defaultKeymap = {
   'L': { type: operations.NAVIGATE_HISTORY_NEXT },
   '[[': { type: operations.NAVIGATE_LINK_PREV },
   ']]': { type: operations.NAVIGATE_LINK_NEXT },
+  'gu': { type: operations.NAVIGATE_PARENT },
 };
 
 const asKeymapChars = (keys) => {
diff --git a/src/content/index.js b/src/content/index.js
index 9fd46be..4751cde 100644
--- a/src/content/index.js
+++ b/src/content/index.js
@@ -43,6 +43,8 @@ const execOperation = (operation) => {
     return navigates.linkPrev(window);
   case operations.NAVIGATE_LINK_NEXT:
     return navigates.linkNext(window);
+  case operations.NAVIGATE_PARENT:
+    return navigates.parent(window);
   }
 };
 
diff --git a/src/content/navigates.js b/src/content/navigates.js
index b68052d..692b7be 100644
--- a/src/content/navigates.js
+++ b/src/content/navigates.js
@@ -44,4 +44,23 @@ const linkNext = (win) => {
   }
 };
 
-export { historyPrev, historyNext, linkPrev, linkNext };
+const parent = (win) => {
+  let loc = win.location;
+  if (loc.hash !== '') {
+    loc.hash = '';
+    return;
+  } else if (loc.search !== '') {
+    loc.search = '';
+    return;
+  }
+
+  const basenamePattern = /\/[^/]+$/;
+  const lastDirPattern = /\/[^/]+\/$/;
+  if (basenamePattern.test(loc.pathname)) {
+    loc.pathname = loc.pathname.replace(basenamePattern, '/');
+  } else if (lastDirPattern.test(loc.pathname)) {
+    loc.pathname = loc.pathname.replace(lastDirPattern, '/');
+  }
+};
+
+export { historyPrev, historyNext, linkPrev, linkNext, parent };
diff --git a/src/operations/index.js b/src/operations/index.js
index bb19df8..493e866 100644
--- a/src/operations/index.js
+++ b/src/operations/index.js
@@ -15,6 +15,7 @@ export default {
   NAVIGATE_HISTORY_NEXT: 'navigate.history.next',
   NAVIGATE_LINK_PREV: 'navigate.link.prev',
   NAVIGATE_LINK_NEXT: 'navigate.link.next',
+  NAVIGATE_PARENT: 'navigate.parent',
 
   // Background
   TABS_CLOSE: 'tabs.close',
diff --git a/test/content/navigates.test.js b/test/content/navigates.test.js
index 21c2a23..cf20435 100644
--- a/test/content/navigates.test.js
+++ b/test/content/navigates.test.js
@@ -2,9 +2,6 @@ import { expect } from "chai";
 import * as navigates from '../../src/content/navigates';
 
 describe('navigates module', () => {
-  beforeEach(() => {
-  });
-
   describe('#linkPrev', () => {
     it('clicks prev link by text content', (done) => {
       document.body.innerHTML = '<a href="#dummy">xprevx</a>  <a href="#prev">go to prev</a>';
@@ -45,6 +42,15 @@ describe('navigates module', () => {
       }, 0);
     });
   });
+
+  describe('#parent', () => {
+    // NOTE: not able to test location
+    it('removes hash', () => {
+      window.location.hash = "#section-1";
+      navigates.parent(window);
+      expect(document.location.hash).to.be.empty;
+    });
+  });
 });