diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 0000000..54aee55
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,9 @@
+version: 2.1
+orbs:
+  node: circleci/node@2.0.2
+
+workflows:
+  matrix-tests:
+    jobs:
+      - node/test:
+          version: 14.18.1
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2eac66c..55f7cbc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 # CHANGELOG
 
-## vNEXT
+## v3.0.0
+
+* Remove `underscore`
+* Compatibility fixes for Hexo v5
+* i18n
 
 ## v1.0.16
 
diff --git a/circle.yml b/circle.yml
deleted file mode 100644
index 7fa19bc..0000000
--- a/circle.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-machine:
-  node:
-    version: 8
diff --git a/languages/cs-CZ.yml b/languages/cs-CZ.yml
new file mode 100644
index 0000000..45778dd
--- /dev/null
+++ b/languages/cs-CZ.yml
@@ -0,0 +1,6 @@
+name: Česky
+pagination:
+  previous: Předchozí
+  next: Další
+github:
+  edit: Editovat na GitHubu
diff --git a/languages/en.yml b/languages/en.yml
new file mode 100644
index 0000000..db4e0d0
--- /dev/null
+++ b/languages/en.yml
@@ -0,0 +1,6 @@
+name: English
+pagination:
+  previous: Previous
+  next: Next
+github:
+  edit: Edit on GitHub
diff --git a/layout/layout.ejs b/layout/layout.ejs
index cbee33b..8a9a174 100644
--- a/layout/layout.ejs
+++ b/layout/layout.ejs
@@ -26,11 +26,11 @@
     <meta property="og:url" content="<%- config.url %>">
     <meta property="og:title" content="<%- page.title %> | <%- config.title %>">
     <meta property="og:description" content="<%- page.description %>">
-    <meta property="og:image" content="<%- config.logo && config.logo.desktop || theme.logo.desktop %>">
-    <meta name="twitter:site" content="<%- theme.social_links.twitter %>">
+    <meta property="og:image" content="<%- config.logo && config.logo.desktop %>">
+    <meta name="twitter:site" content="<%- config.social_links.twitter %>">
     <meta name="twitter:title" content="<%- page.title %> | <%- config.title %>">
     <meta name="twitter:description" content="<%- page.description %>">
-    <meta name="twitter:image" content="<%- config.logo && config.logo.desktop || theme.logo.desktop %>">
+    <meta name="twitter:image" content="<%- config.logo && config.logo.desktop %>">
 
     <!-- Misc -->
     <meta name="google-site-verification" content="" />
diff --git a/layout/page.ejs b/layout/page.ejs
index e35add2..01cf451 100644
--- a/layout/page.ejs
+++ b/layout/page.ejs
@@ -18,7 +18,7 @@
         <span class="icon-menu"></span>
       </div>
       <div class="nav-item nav-item-logo">
-        <% logo = config.logo || theme.logo %>
+        <% logo = config.logo %>
         <a class="logo-wrapper" href="<%- logo.url %>" title="<%- logo.title %> <%- logo.subtitle %>" <%- logo.target && 'target=' + logo.target %> >
           <img src="<%- relative_url(page.path, logo.nav_mobile) %>" alt="<%- logo.title %>" class="logo"/>
           <% if (logo && logo.subbrand) { %>
@@ -30,23 +30,14 @@
       </div>
     </div>
 
-
-    <% if (config.apollo_nav) { %>
-      <div class="nav-group right">
-        <div id="nav-container" class="show-desktop"></div>
-        <script src="https://apollographql-nav.netlify.com/index.js"></script>
-        <script>ApolloNav.initNav({ theme: 'light' }, 'nav-container')</script>
-      </div>
-    <% } else { %>
-      <div class="nav-group right">
-        <% _.each(config.nav_links || theme.nav_links, function (link, title) { %>
-          <div class="nav-item show-desktop <%- link.active && 'active' %> <%- link.separator && 'separator' %>">
-            <a class="link" href="<%- link.url || link %>" <%- link.target && 'target=' + link.target %> >
-              <span><%- title %></span>
-            </a>
-          </div>
-        <% }) %>
-    <% } %>
+    <div class="nav-group right">
+      <% Object.entries(config.nav_links).forEach(function ([title, link]) { %>
+        <div class="nav-item show-desktop <%- link.active && 'active' %> <%- link.separator && 'separator' %>">
+          <a class="link" href="<%- link.url || link %>" <%- link.target && 'target=' + link.target %> >
+            <span><%- title %></span>
+          </a>
+        </div>
+      <% }) %>
     </div>
   </div>
 
@@ -78,8 +69,15 @@
         <div class="content-wrapper">
           <%
             function findAdjacent (direction) {
-              var pagePaths = _.flatten(_.map(config.sidebar_categories, function(vals) { return vals; }));
-              var pages = _.map(pagePaths, function (val) { return site.pages.findOne({path: val + '.html'}); });
+              var pagePaths = Object.entries(config.sidebar_categories).map(function([key, vals]) { return vals; }).reduce( (a, b) => a.concat(b), []);
+              // i18n
+              if (page.lang && page.lang !== 'en') {
+                const lang = page.lang + '/';
+                pagePaths.forEach((path, index) => {
+                  pagePaths[index] = `${lang}${path}`;
+                })
+              }
+              var pages = pagePaths.map(function (val) { return site.pages.findOne({path: val + '.html'}); });
               var i = pages.length
               while (i--) {
                 if (pages[i] && pages[i].title === page.title) {
@@ -95,7 +93,7 @@
 
               <a class="link primary prev" href="<%- relative_url(page.path, prev.path) %>">
                 <span class="icon-arrow-left-alt"></span>
-                <span class="subtitle-pagination">Previous</span>
+                <span class="subtitle-pagination"><%= __('pagination.previous') %></span>
                 <%- prev.title %>
               </a>
 
@@ -103,7 +101,7 @@
           <% var next = findAdjacent(1); if (next) { %>
 
               <a class="link primary next" href="<%- relative_url(page.path, next.path) %>">
-                <span class="subtitle-pagination">Next</span>
+                <span class="subtitle-pagination"><%= __('pagination.next') %></span>
                 <%- next.title %>
                   <span class="icon-arrow-right-alt"></span>
               </a>
@@ -114,7 +112,7 @@
 
       <div class="github">
         <a class="link tertiary " href="<%- githubUrl %>" target="_blank">
-          <span class="icon-github"></span>Edit on GitHub</a>
+          <span class="icon-github"></span><%= __('github.edit') %></a>
       </div>
 
       <% if (page.discourseTopicId) { %>
diff --git a/layout/partials/sidebar.ejs b/layout/partials/sidebar.ejs
index 5fbd5cc..94d9b13 100644
--- a/layout/partials/sidebar.ejs
+++ b/layout/partials/sidebar.ejs
@@ -10,9 +10,14 @@
     if (isOutsidePath(path)) {
       return path;
     }
+    // i18n
+    let lang = '';
+    if (page.lang && page.lang !== 'en') {
+      lang = page.lang + '/';
+    }
 
     // The path we've been told to find from _config.yaml.
-    const htmlPath = `${path}.html`
+    const htmlPath = `${lang}${path}.html`
 
     const extraClasses = [];
 
@@ -51,11 +56,11 @@
       <script>ApolloNav.initNav({ theme: 'light', id: 'mobile-nav' }, 'sidebar-panel-nav')</script></a>
     <% } else { %>
       <div class="panel-item">
-        <a class="" href="<%- relative_url(page.path, theme.logo.url) %>" title="<%- theme.logo.title %>" <%- theme.logo.target && 'target=' + theme.logo.target %> >
-          <span><%- theme.logo.title %> <%- theme.logo.subtitle %></span>
+        <a class="" href="<%- relative_url(page.path, config.logo.url) %>" title="<%- config.logo.title %>" <%- config.logo.target && 'target=' + config.logo.target %> >
+          <span><%- config.logo.title %> <%- config.logo.subtitle %></span>
         </a>
       </div>
-      <% _.each(config.nav_links || theme.nav_links, function (link, title) { %>
+      <% Object.entries(config.nav_links).forEach(function ([title, link]) { %>
         <div class="panel-item <%- link.active && 'active' %>">
           <a class="" href="<%- link.url || link %>" <%- link.target && 'target=' + link.target %> >
             <span><%- title %></span>
@@ -93,8 +98,7 @@
     <% } %>
 
     <ul class="toc">
-      <% _.each(config.sidebar_categories, function(pages, category) { %>
-
+      <%  Object.entries(config.sidebar_categories).forEach(function ([category, pages]) { %>
         <li>
           <% if (category !== 'null') { %>
             <div class="heading-toc"><%- category %></div>
@@ -103,6 +107,7 @@
           <ul class="list-toc">
             <% pages.forEach(function(path) { %>
               <% const details = pathDetails(path) %>
+
               <% if (details) { %>
               <li class="item-toc <%- details.extraClasses %>">
                 <a
diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index 3028934..0c9e16c 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -1,6 +1,6 @@
 {
   "name": "meteor-theme-hexo",
-  "version": "2.0.3",
+  "version": "3.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 9e3c9b6..1aacb03 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "meteor-theme-hexo",
-  "version": "2.0.3",
-  "description": "[Read the docs docs.](https://docs-docs.netlify.com/docs/docs/)",
+  "version": "3.0.0",
+  "description": "",
   "main": "index.js",
   "scripts": {
     "test": "node ./tests/index.js"