diff --git a/404.html b/404.html
index 4c0e968..558f537 100644
--- a/404.html
+++ b/404.html
@@ -17,17 +17,17 @@
     <meta property="og:title" content="404 Page not found" />
 <meta property="og:description" content="Eric Liu&#39;s personal website" />
 <meta property="og:type" content="website" />
-<meta property="og:url" content="http://ericxliu.me/404.html" />
+<meta property="og:url" content="https://ericxliu.me/404.html" />
 
 
 
     
-      <base href="http://ericxliu.me/404.html">
+      <base href="https://ericxliu.me/404.html">
     
     <title>Eric&#39;s Personal Page</title>
 
     
-      <link rel="canonical" href="http://ericxliu.me/404.html">
+      <link rel="canonical" href="https://ericxliu.me/404.html">
     
 
     <link href="https://fonts.googleapis.com/css?family=Lato:400,700%7CMerriweather:300,700%7CSource+Code+Pro:400,700&display=swap" rel="stylesheet">
@@ -37,7 +37,7 @@
     
       
       
-      <link rel="stylesheet" href="http://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
+      <link rel="stylesheet" href="https://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
     
 
     
@@ -48,8 +48,8 @@
 
     
 
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
 
     <meta name="generator" content="Hugo 0.97.0" />
   </head>
@@ -60,7 +60,7 @@
     <main class="wrapper">
       <nav class="navigation">
   <section class="container">
-    <a class="navigation-title" href="http://ericxliu.me/">
+    <a class="navigation-title" href="https://ericxliu.me/">
       Eric&#39;s Personal Page
     </a>
     
@@ -70,7 +70,7 @@
       
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me/posts/">Posts</a>
+            <a class="navigation-link" href="https://ericxliu.me/posts/">Posts</a>
           </li>
         
           <li class="navigation-item">
@@ -86,7 +86,7 @@
           </li>
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me">|</a>
+            <a class="navigation-link" href="https://ericxliu.me">|</a>
           </li>
         
           <li class="navigation-item">
@@ -107,7 +107,7 @@
   <div class="error">
     <h1>404</h1>
     <h2>Page Not Found</h2>
-    <p>Sorry, this page does not exist.<br />You can head back to <a href="http://ericxliu.me">homepage</a>.</p>
+    <p>Sorry, this page does not exist.<br />You can head back to <a href="https://ericxliu.me">homepage</a>.</p>
   </div>
 </section>
 
diff --git a/about/index.html b/about/index.html
index 195b12a..dba8f28 100644
--- a/about/index.html
+++ b/about/index.html
@@ -17,21 +17,21 @@
     <meta property="og:title" content="About" />
 <meta property="og:description" content="" />
 <meta property="og:type" content="article" />
-<meta property="og:url" content="http://ericxliu.me/about/" /><meta property="article:section" content="" />
+<meta property="og:url" content="https://ericxliu.me/about/" /><meta property="article:section" content="" />
 <meta property="article:published_time" content="2018-06-01T07:13:52+00:00" />
 <meta property="article:modified_time" content="2018-06-01T07:13:52+00:00" />
 
 
 
     
-      <base href="http://ericxliu.me/about/">
+      <base href="https://ericxliu.me/about/">
     
     <title>
   About · Eric&#39;s Personal Page
 </title>
 
     
-      <link rel="canonical" href="http://ericxliu.me/about/">
+      <link rel="canonical" href="https://ericxliu.me/about/">
     
 
     <link href="https://fonts.googleapis.com/css?family=Lato:400,700%7CMerriweather:300,700%7CSource+Code+Pro:400,700&display=swap" rel="stylesheet">
@@ -41,7 +41,7 @@
     
       
       
-      <link rel="stylesheet" href="http://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
+      <link rel="stylesheet" href="https://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
     
 
     
@@ -52,8 +52,8 @@
 
     
 
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
 
     <meta name="generator" content="Hugo 0.97.0" />
   </head>
@@ -64,7 +64,7 @@
     <main class="wrapper">
       <nav class="navigation">
   <section class="container">
-    <a class="navigation-title" href="http://ericxliu.me/">
+    <a class="navigation-title" href="https://ericxliu.me/">
       Eric&#39;s Personal Page
     </a>
     
@@ -74,7 +74,7 @@
       
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me/posts/">Posts</a>
+            <a class="navigation-link" href="https://ericxliu.me/posts/">Posts</a>
           </li>
         
           <li class="navigation-item">
@@ -90,7 +90,7 @@
           </li>
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me">|</a>
+            <a class="navigation-link" href="https://ericxliu.me">|</a>
           </li>
         
           <li class="navigation-item">
diff --git a/categories/index.html b/categories/index.html
index 79a6488..ffaba62 100644
--- a/categories/index.html
+++ b/categories/index.html
@@ -17,17 +17,17 @@
     <meta property="og:title" content="Categories" />
 <meta property="og:description" content="Eric Liu&#39;s personal website" />
 <meta property="og:type" content="website" />
-<meta property="og:url" content="http://ericxliu.me/categories/" />
+<meta property="og:url" content="https://ericxliu.me/categories/" />
 
 
 
     
-      <base href="http://ericxliu.me/categories/">
+      <base href="https://ericxliu.me/categories/">
     
     <title>Category: Categories · Eric&#39;s Personal Page</title>
 
     
-      <link rel="canonical" href="http://ericxliu.me/categories/">
+      <link rel="canonical" href="https://ericxliu.me/categories/">
     
 
     <link href="https://fonts.googleapis.com/css?family=Lato:400,700%7CMerriweather:300,700%7CSource+Code+Pro:400,700&display=swap" rel="stylesheet">
@@ -37,7 +37,7 @@
     
       
       
-      <link rel="stylesheet" href="http://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
+      <link rel="stylesheet" href="https://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
     
 
     
@@ -48,10 +48,10 @@
 
     
 
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
 
-    <link rel="alternate" type="application/rss+xml" href="http://ericxliu.me/categories/index.xml" title="Eric's Personal Page" />
+    <link rel="alternate" type="application/rss+xml" href="https://ericxliu.me/categories/index.xml" title="Eric's Personal Page" />
     <meta name="generator" content="Hugo 0.97.0" />
   </head>
 
@@ -61,7 +61,7 @@
     <main class="wrapper">
       <nav class="navigation">
   <section class="container">
-    <a class="navigation-title" href="http://ericxliu.me/">
+    <a class="navigation-title" href="https://ericxliu.me/">
       Eric&#39;s Personal Page
     </a>
     
@@ -71,7 +71,7 @@
       
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me/posts/">Posts</a>
+            <a class="navigation-link" href="https://ericxliu.me/posts/">Posts</a>
           </li>
         
           <li class="navigation-item">
@@ -87,7 +87,7 @@
           </li>
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me">|</a>
+            <a class="navigation-link" href="https://ericxliu.me">|</a>
           </li>
         
           <li class="navigation-item">
diff --git a/categories/index.xml b/categories/index.xml
index 72833d7..6664cc7 100644
--- a/categories/index.xml
+++ b/categories/index.xml
@@ -2,12 +2,12 @@
 <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
   <channel>
     <title>Categories on Eric&#39;s Personal Page</title>
-    <link>http://ericxliu.me/categories/</link>
+    <link>https://ericxliu.me/categories/</link>
     <description>Recent content in Categories on Eric&#39;s Personal Page</description>
     <generator>Hugo -- gohugo.io</generator>
     <language>en</language>
     
-	<atom:link href="http://ericxliu.me/categories/index.xml" rel="self" type="application/rss+xml" />
+	<atom:link href="https://ericxliu.me/categories/index.xml" rel="self" type="application/rss+xml" />
     
     
   </channel>
diff --git a/categories/page/1/index.html b/categories/page/1/index.html
index dfe3402..141be00 100644
--- a/categories/page/1/index.html
+++ b/categories/page/1/index.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html lang="en">
   <head>
-    <title>http://ericxliu.me/categories/</title>
-    <link rel="canonical" href="http://ericxliu.me/categories/">
+    <title>https://ericxliu.me/categories/</title>
+    <link rel="canonical" href="https://ericxliu.me/categories/">
     <meta name="robots" content="noindex">
     <meta charset="utf-8">
-    <meta http-equiv="refresh" content="0; url=http://ericxliu.me/categories/">
+    <meta http-equiv="refresh" content="0; url=https://ericxliu.me/categories/">
   </head>
 </html>
diff --git a/index.html b/index.html
index 374a275..ed3ac8c 100644
--- a/index.html
+++ b/index.html
@@ -17,17 +17,17 @@
     <meta property="og:title" content="Eric&#39;s Personal Page" />
 <meta property="og:description" content="Eric Liu&#39;s personal website" />
 <meta property="og:type" content="website" />
-<meta property="og:url" content="http://ericxliu.me/" />
+<meta property="og:url" content="https://ericxliu.me/" />
 
 
 
     
-      <base href="http://ericxliu.me/">
+      <base href="https://ericxliu.me/">
     
     <title>Eric&#39;s Personal Page</title>
 
     
-      <link rel="canonical" href="http://ericxliu.me/">
+      <link rel="canonical" href="https://ericxliu.me/">
     
 
     <link href="https://fonts.googleapis.com/css?family=Lato:400,700%7CMerriweather:300,700%7CSource+Code+Pro:400,700&display=swap" rel="stylesheet">
@@ -37,7 +37,7 @@
     
       
       
-      <link rel="stylesheet" href="http://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
+      <link rel="stylesheet" href="https://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
     
 
     
@@ -48,10 +48,10 @@
 
     
 
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
 
-    <link rel="alternate" type="application/rss+xml" href="http://ericxliu.me/index.xml" title="Eric's Personal Page" />
+    <link rel="alternate" type="application/rss+xml" href="https://ericxliu.me/index.xml" title="Eric's Personal Page" />
     <meta name="generator" content="Hugo 0.97.0" />
   </head>
 
@@ -61,7 +61,7 @@
     <main class="wrapper">
       <nav class="navigation">
   <section class="container">
-    <a class="navigation-title" href="http://ericxliu.me/">
+    <a class="navigation-title" href="https://ericxliu.me/">
       Eric&#39;s Personal Page
     </a>
     
@@ -71,7 +71,7 @@
       
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me/posts/">Posts</a>
+            <a class="navigation-link" href="https://ericxliu.me/posts/">Posts</a>
           </li>
         
           <li class="navigation-item">
@@ -87,7 +87,7 @@
           </li>
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me">|</a>
+            <a class="navigation-link" href="https://ericxliu.me">|</a>
           </li>
         
           <li class="navigation-item">
@@ -108,7 +108,7 @@
   <div class="about">
     
       
-        <div class="avatar"><img src="http://ericxliu.me/images/gravatar.png" alt="avatar"></div>
+        <div class="avatar"><img src="https://ericxliu.me/images/gravatar.png" alt="avatar"></div>
       
     
     
diff --git a/index.xml b/index.xml
index 36d3a51..d13e02f 100644
--- a/index.xml
+++ b/index.xml
@@ -2,21 +2,21 @@
 <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
   <channel>
     <title>Eric&#39;s Personal Page</title>
-    <link>http://ericxliu.me/</link>
+    <link>https://ericxliu.me/</link>
     <description>Recent content on Eric&#39;s Personal Page</description>
     <generator>Hugo -- gohugo.io</generator>
     <language>en</language>
     <lastBuildDate>Mon, 26 Oct 2020 04:14:43 +0000</lastBuildDate>
     
-	<atom:link href="http://ericxliu.me/index.xml" rel="self" type="application/rss+xml" />
+	<atom:link href="https://ericxliu.me/index.xml" rel="self" type="application/rss+xml" />
     
     
     <item>
       <title>Some useful files</title>
-      <link>http://ericxliu.me/posts/useful/</link>
+      <link>https://ericxliu.me/posts/useful/</link>
       <pubDate>Mon, 26 Oct 2020 04:14:43 +0000</pubDate>
       
-      <guid>http://ericxliu.me/posts/useful/</guid>
+      <guid>https://ericxliu.me/posts/useful/</guid>
       <description>&lt;ul&gt;
 &lt;li&gt;&lt;a href=&#34;https://ericxliu.me/rootCA.pem&#34;&gt;rootCA.pem&lt;/a&gt;&lt;/li&gt;
 &lt;li&gt;&lt;a href=&#34;https://ericxliu.me/vpnclient.ovpn&#34;&gt;vpnclient.ovpn&lt;/a&gt;&lt;/li&gt;
@@ -26,10 +26,10 @@
     
     <item>
       <title>Credit Card Spending Dashboards</title>
-      <link>http://ericxliu.me/posts/credit_card/</link>
+      <link>https://ericxliu.me/posts/credit_card/</link>
       <pubDate>Tue, 16 Jun 2020 00:00:00 +0000</pubDate>
       
-      <guid>http://ericxliu.me/posts/credit_card/</guid>
+      <guid>https://ericxliu.me/posts/credit_card/</guid>
       <description>&lt;!DOCTYPE html&gt;
 &lt;html&gt;
 &lt;head&gt;&lt;meta charset=&#34;utf-8&#34; /&gt;
@@ -13747,10 +13747,10 @@ div#notebook {
     
     <item>
       <title>About</title>
-      <link>http://ericxliu.me/about/</link>
+      <link>https://ericxliu.me/about/</link>
       <pubDate>Fri, 01 Jun 2018 07:13:52 +0000</pubDate>
       
-      <guid>http://ericxliu.me/about/</guid>
+      <guid>https://ericxliu.me/about/</guid>
       <description></description>
     </item>
     
diff --git a/posts/credit_card/index.html b/posts/credit_card/index.html
index e39aca7..5392d74 100644
--- a/posts/credit_card/index.html
+++ b/posts/credit_card/index.html
@@ -17,21 +17,21 @@
     <meta property="og:title" content="Credit Card Spending Dashboards" />
 <meta property="og:description" content="gspread_test    (function() { function addWidgetsRenderer() { var mimeElement = document.querySelector(&#39;script[type=&#34;application/vnd.jupyter.widget-view&#43;json&#34;]&#39;); var scriptElement = document.createElement(&#39;script&#39;); var widgetRendererSrc = &#39;@jupyter-widgets/html-manager@*/dist/embed-amd.js&#39;; var widgetState; // Fallback for older version: try { widgetState = mimeElement && JSON.parse(mimeElement.innerHTML); if (widgetState && (widgetState.version_major /*! * * Twitter Bootstrap * */ /*! * Bootstrap v3.3.7 (http://getbootstrap.com) * Copyright 2011-2016 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) */ /*! normalize.css v3.0.3 | MIT License | github." />
 <meta property="og:type" content="article" />
-<meta property="og:url" content="http://ericxliu.me/posts/credit_card/" /><meta property="article:section" content="posts" />
+<meta property="og:url" content="https://ericxliu.me/posts/credit_card/" /><meta property="article:section" content="posts" />
 <meta property="article:published_time" content="2020-06-16T00:00:00+00:00" />
 <meta property="article:modified_time" content="2020-06-16T00:00:00+00:00" />
 
 
 
     
-      <base href="http://ericxliu.me/posts/credit_card/">
+      <base href="https://ericxliu.me/posts/credit_card/">
     
     <title>
   Credit Card Spending Dashboards · Eric&#39;s Personal Page
 </title>
 
     
-      <link rel="canonical" href="http://ericxliu.me/posts/credit_card/">
+      <link rel="canonical" href="https://ericxliu.me/posts/credit_card/">
     
 
     <link href="https://fonts.googleapis.com/css?family=Lato:400,700%7CMerriweather:300,700%7CSource+Code+Pro:400,700&display=swap" rel="stylesheet">
@@ -41,7 +41,7 @@
     
       
       
-      <link rel="stylesheet" href="http://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
+      <link rel="stylesheet" href="https://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
     
 
     
@@ -52,8 +52,8 @@
 
     
 
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
 
     <meta name="generator" content="Hugo 0.97.0" />
   </head>
@@ -64,7 +64,7 @@
     <main class="wrapper">
       <nav class="navigation">
   <section class="container">
-    <a class="navigation-title" href="http://ericxliu.me/">
+    <a class="navigation-title" href="https://ericxliu.me/">
       Eric&#39;s Personal Page
     </a>
     
@@ -74,7 +74,7 @@
       
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me/posts/">Posts</a>
+            <a class="navigation-link" href="https://ericxliu.me/posts/">Posts</a>
           </li>
         
           <li class="navigation-item">
@@ -90,7 +90,7 @@
           </li>
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me">|</a>
+            <a class="navigation-link" href="https://ericxliu.me">|</a>
           </li>
         
           <li class="navigation-item">
diff --git a/posts/index.html b/posts/index.html
index 857aaef..0065ef4 100644
--- a/posts/index.html
+++ b/posts/index.html
@@ -17,19 +17,19 @@
     <meta property="og:title" content="Posts" />
 <meta property="og:description" content="Eric Liu&#39;s personal website" />
 <meta property="og:type" content="website" />
-<meta property="og:url" content="http://ericxliu.me/posts/" />
+<meta property="og:url" content="https://ericxliu.me/posts/" />
 
 
 
     
-      <base href="http://ericxliu.me/posts/">
+      <base href="https://ericxliu.me/posts/">
     
     <title>
   Posts · Eric&#39;s Personal Page
 </title>
 
     
-      <link rel="canonical" href="http://ericxliu.me/posts/">
+      <link rel="canonical" href="https://ericxliu.me/posts/">
     
 
     <link href="https://fonts.googleapis.com/css?family=Lato:400,700%7CMerriweather:300,700%7CSource+Code+Pro:400,700&display=swap" rel="stylesheet">
@@ -39,7 +39,7 @@
     
       
       
-      <link rel="stylesheet" href="http://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
+      <link rel="stylesheet" href="https://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
     
 
     
@@ -50,10 +50,10 @@
 
     
 
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
 
-    <link rel="alternate" type="application/rss+xml" href="http://ericxliu.me/posts/index.xml" title="Eric's Personal Page" />
+    <link rel="alternate" type="application/rss+xml" href="https://ericxliu.me/posts/index.xml" title="Eric's Personal Page" />
     <meta name="generator" content="Hugo 0.97.0" />
   </head>
 
@@ -63,7 +63,7 @@
     <main class="wrapper">
       <nav class="navigation">
   <section class="container">
-    <a class="navigation-title" href="http://ericxliu.me/">
+    <a class="navigation-title" href="https://ericxliu.me/">
       Eric&#39;s Personal Page
     </a>
     
@@ -73,7 +73,7 @@
       
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me/posts/">Posts</a>
+            <a class="navigation-link" href="https://ericxliu.me/posts/">Posts</a>
           </li>
         
           <li class="navigation-item">
@@ -89,7 +89,7 @@
           </li>
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me">|</a>
+            <a class="navigation-link" href="https://ericxliu.me">|</a>
           </li>
         
           <li class="navigation-item">
@@ -111,11 +111,11 @@
 
     <ul><li>
   <span class="date">October 26, 2020</span>
-  <a class="title" href="http://ericxliu.me/posts/useful/">Some useful files</a>
+  <a class="title" href="https://ericxliu.me/posts/useful/">Some useful files</a>
 </li>
 <li>
   <span class="date">June 16, 2020</span>
-  <a class="title" href="http://ericxliu.me/posts/credit_card/">Credit Card Spending Dashboards</a>
+  <a class="title" href="https://ericxliu.me/posts/credit_card/">Credit Card Spending Dashboards</a>
 </li>
 </ul>
 
diff --git a/posts/index.xml b/posts/index.xml
index e3792fe..e44ef72 100644
--- a/posts/index.xml
+++ b/posts/index.xml
@@ -2,21 +2,21 @@
 <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
   <channel>
     <title>Posts on Eric&#39;s Personal Page</title>
-    <link>http://ericxliu.me/posts/</link>
+    <link>https://ericxliu.me/posts/</link>
     <description>Recent content in Posts on Eric&#39;s Personal Page</description>
     <generator>Hugo -- gohugo.io</generator>
     <language>en</language>
     <lastBuildDate>Mon, 26 Oct 2020 04:14:43 +0000</lastBuildDate>
     
-	<atom:link href="http://ericxliu.me/posts/index.xml" rel="self" type="application/rss+xml" />
+	<atom:link href="https://ericxliu.me/posts/index.xml" rel="self" type="application/rss+xml" />
     
     
     <item>
       <title>Some useful files</title>
-      <link>http://ericxliu.me/posts/useful/</link>
+      <link>https://ericxliu.me/posts/useful/</link>
       <pubDate>Mon, 26 Oct 2020 04:14:43 +0000</pubDate>
       
-      <guid>http://ericxliu.me/posts/useful/</guid>
+      <guid>https://ericxliu.me/posts/useful/</guid>
       <description>&lt;ul&gt;
 &lt;li&gt;&lt;a href=&#34;https://ericxliu.me/rootCA.pem&#34;&gt;rootCA.pem&lt;/a&gt;&lt;/li&gt;
 &lt;li&gt;&lt;a href=&#34;https://ericxliu.me/vpnclient.ovpn&#34;&gt;vpnclient.ovpn&lt;/a&gt;&lt;/li&gt;
@@ -26,10 +26,10 @@
     
     <item>
       <title>Credit Card Spending Dashboards</title>
-      <link>http://ericxliu.me/posts/credit_card/</link>
+      <link>https://ericxliu.me/posts/credit_card/</link>
       <pubDate>Tue, 16 Jun 2020 00:00:00 +0000</pubDate>
       
-      <guid>http://ericxliu.me/posts/credit_card/</guid>
+      <guid>https://ericxliu.me/posts/credit_card/</guid>
       <description>&lt;!DOCTYPE html&gt;
 &lt;html&gt;
 &lt;head&gt;&lt;meta charset=&#34;utf-8&#34; /&gt;
diff --git a/posts/page/1/index.html b/posts/page/1/index.html
index c63068b..3569791 100644
--- a/posts/page/1/index.html
+++ b/posts/page/1/index.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html lang="en">
   <head>
-    <title>http://ericxliu.me/posts/</title>
-    <link rel="canonical" href="http://ericxliu.me/posts/">
+    <title>https://ericxliu.me/posts/</title>
+    <link rel="canonical" href="https://ericxliu.me/posts/">
     <meta name="robots" content="noindex">
     <meta charset="utf-8">
-    <meta http-equiv="refresh" content="0; url=http://ericxliu.me/posts/">
+    <meta http-equiv="refresh" content="0; url=https://ericxliu.me/posts/">
   </head>
 </html>
diff --git a/posts/useful/index.html b/posts/useful/index.html
index 45d7450..3134dc0 100644
--- a/posts/useful/index.html
+++ b/posts/useful/index.html
@@ -17,21 +17,21 @@
     <meta property="og:title" content="Some useful files" />
 <meta property="og:description" content=" rootCA.pem vpnclient.ovpn  " />
 <meta property="og:type" content="article" />
-<meta property="og:url" content="http://ericxliu.me/posts/useful/" /><meta property="article:section" content="posts" />
+<meta property="og:url" content="https://ericxliu.me/posts/useful/" /><meta property="article:section" content="posts" />
 <meta property="article:published_time" content="2020-10-26T04:14:43+00:00" />
 <meta property="article:modified_time" content="2020-10-26T04:14:43+00:00" />
 
 
 
     
-      <base href="http://ericxliu.me/posts/useful/">
+      <base href="https://ericxliu.me/posts/useful/">
     
     <title>
   Some useful files · Eric&#39;s Personal Page
 </title>
 
     
-      <link rel="canonical" href="http://ericxliu.me/posts/useful/">
+      <link rel="canonical" href="https://ericxliu.me/posts/useful/">
     
 
     <link href="https://fonts.googleapis.com/css?family=Lato:400,700%7CMerriweather:300,700%7CSource+Code+Pro:400,700&display=swap" rel="stylesheet">
@@ -41,7 +41,7 @@
     
       
       
-      <link rel="stylesheet" href="http://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
+      <link rel="stylesheet" href="https://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
     
 
     
@@ -52,8 +52,8 @@
 
     
 
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
 
     <meta name="generator" content="Hugo 0.97.0" />
   </head>
@@ -64,7 +64,7 @@
     <main class="wrapper">
       <nav class="navigation">
   <section class="container">
-    <a class="navigation-title" href="http://ericxliu.me/">
+    <a class="navigation-title" href="https://ericxliu.me/">
       Eric&#39;s Personal Page
     </a>
     
@@ -74,7 +74,7 @@
       
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me/posts/">Posts</a>
+            <a class="navigation-link" href="https://ericxliu.me/posts/">Posts</a>
           </li>
         
           <li class="navigation-item">
@@ -90,7 +90,7 @@
           </li>
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me">|</a>
+            <a class="navigation-link" href="https://ericxliu.me">|</a>
           </li>
         
           <li class="navigation-item">
diff --git a/sitemap.xml b/sitemap.xml
index edb557a..0acc0ab 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -2,23 +2,23 @@
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
   xmlns:xhtml="http://www.w3.org/1999/xhtml">
   <url>
-    <loc>http://ericxliu.me/</loc>
+    <loc>https://ericxliu.me/</loc>
     <lastmod>2020-10-26T04:14:43+00:00</lastmod>
   </url><url>
-    <loc>http://ericxliu.me/posts/</loc>
+    <loc>https://ericxliu.me/posts/</loc>
     <lastmod>2020-10-26T04:14:43+00:00</lastmod>
   </url><url>
-    <loc>http://ericxliu.me/posts/useful/</loc>
+    <loc>https://ericxliu.me/posts/useful/</loc>
     <lastmod>2020-10-26T04:14:43+00:00</lastmod>
   </url><url>
-    <loc>http://ericxliu.me/posts/credit_card/</loc>
+    <loc>https://ericxliu.me/posts/credit_card/</loc>
     <lastmod>2020-06-16T00:00:00+00:00</lastmod>
   </url><url>
-    <loc>http://ericxliu.me/about/</loc>
+    <loc>https://ericxliu.me/about/</loc>
     <lastmod>2018-06-01T07:13:52+00:00</lastmod>
   </url><url>
-    <loc>http://ericxliu.me/categories/</loc>
+    <loc>https://ericxliu.me/categories/</loc>
   </url><url>
-    <loc>http://ericxliu.me/tags/</loc>
+    <loc>https://ericxliu.me/tags/</loc>
   </url>
 </urlset>
diff --git a/tags/index.html b/tags/index.html
index b8d00a2..c4b321d 100644
--- a/tags/index.html
+++ b/tags/index.html
@@ -17,17 +17,17 @@
     <meta property="og:title" content="Tags" />
 <meta property="og:description" content="Eric Liu&#39;s personal website" />
 <meta property="og:type" content="website" />
-<meta property="og:url" content="http://ericxliu.me/tags/" />
+<meta property="og:url" content="https://ericxliu.me/tags/" />
 
 
 
     
-      <base href="http://ericxliu.me/tags/">
+      <base href="https://ericxliu.me/tags/">
     
     <title>Tag: Tags · Eric&#39;s Personal Page</title>
 
     
-      <link rel="canonical" href="http://ericxliu.me/tags/">
+      <link rel="canonical" href="https://ericxliu.me/tags/">
     
 
     <link href="https://fonts.googleapis.com/css?family=Lato:400,700%7CMerriweather:300,700%7CSource+Code+Pro:400,700&display=swap" rel="stylesheet">
@@ -37,7 +37,7 @@
     
       
       
-      <link rel="stylesheet" href="http://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
+      <link rel="stylesheet" href="https://ericxliu.me/css/coder.min.a4f332213a21ce8eb521670c614470c58923aaaf385e2a73982c31dd7642decb.css" integrity="sha256-pPMyITohzo61IWcMYURwxYkjqq84XipzmCwx3XZC3ss=" crossorigin="anonymous" media="screen" />
     
 
     
@@ -48,10 +48,10 @@
 
     
 
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
-    <link rel="icon" type="image/png" href="http://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-32x32.png" sizes="32x32">
+    <link rel="icon" type="image/png" href="https://ericxliu.me/images/favicon-16x16.png" sizes="16x16">
 
-    <link rel="alternate" type="application/rss+xml" href="http://ericxliu.me/tags/index.xml" title="Eric's Personal Page" />
+    <link rel="alternate" type="application/rss+xml" href="https://ericxliu.me/tags/index.xml" title="Eric's Personal Page" />
     <meta name="generator" content="Hugo 0.97.0" />
   </head>
 
@@ -61,7 +61,7 @@
     <main class="wrapper">
       <nav class="navigation">
   <section class="container">
-    <a class="navigation-title" href="http://ericxliu.me/">
+    <a class="navigation-title" href="https://ericxliu.me/">
       Eric&#39;s Personal Page
     </a>
     
@@ -71,7 +71,7 @@
       
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me/posts/">Posts</a>
+            <a class="navigation-link" href="https://ericxliu.me/posts/">Posts</a>
           </li>
         
           <li class="navigation-item">
@@ -87,7 +87,7 @@
           </li>
         
           <li class="navigation-item">
-            <a class="navigation-link" href="http://ericxliu.me">|</a>
+            <a class="navigation-link" href="https://ericxliu.me">|</a>
           </li>
         
           <li class="navigation-item">
diff --git a/tags/index.xml b/tags/index.xml
index 40f032b..e8ce959 100644
--- a/tags/index.xml
+++ b/tags/index.xml
@@ -2,12 +2,12 @@
 <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
   <channel>
     <title>Tags on Eric&#39;s Personal Page</title>
-    <link>http://ericxliu.me/tags/</link>
+    <link>https://ericxliu.me/tags/</link>
     <description>Recent content in Tags on Eric&#39;s Personal Page</description>
     <generator>Hugo -- gohugo.io</generator>
     <language>en</language>
     
-	<atom:link href="http://ericxliu.me/tags/index.xml" rel="self" type="application/rss+xml" />
+	<atom:link href="https://ericxliu.me/tags/index.xml" rel="self" type="application/rss+xml" />
     
     
   </channel>
diff --git a/tags/page/1/index.html b/tags/page/1/index.html
index 6615770..1d5bffc 100644
--- a/tags/page/1/index.html
+++ b/tags/page/1/index.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html lang="en">
   <head>
-    <title>http://ericxliu.me/tags/</title>
-    <link rel="canonical" href="http://ericxliu.me/tags/">
+    <title>https://ericxliu.me/tags/</title>
+    <link rel="canonical" href="https://ericxliu.me/tags/">
     <meta name="robots" content="noindex">
     <meta charset="utf-8">
-    <meta http-equiv="refresh" content="0; url=http://ericxliu.me/tags/">
+    <meta http-equiv="refresh" content="0; url=https://ericxliu.me/tags/">
   </head>
 </html>