diff --git a/0001-intro/index.html b/0001-intro/index.html
index b28fdb2..3bd3e58 100644
--- a/0001-intro/index.html
+++ b/0001-intro/index.html
@@ -30,7 +30,7 @@
 				<section>
           <section data-markdown data-separator="---" data-separator-notes="^Note:">
             <textarea data-template>
-              <a href="http://frappe.io/" target="_blank">Frappe</a>
+              <a href="https://frappe.io/" target="_blank">Frappe</a>
               Note:
               Open Source Framework to build applications
               Alternative to Flask, Djankgo
@@ -50,12 +50,12 @@
 				<section>
           <section data-markdown data-separator="---" data-separator-notes="^Note:">
             <textarea data-template>
-              <a href="http://browserstack.com/" target="_blank">BrowserStack</a>
+              <a href="https://browserstack.com/" target="_blank">BrowserStack</a>
               ---
               <div>
                 <div><a href="https://www.nagios.org/" target="_blank">Nagios</a></div>
                 <br/>
-                <img data-src="http://www.quickmeme.com/img/1d/1ddd3c8b6503c36e84de315d54fe7132c8616a709c31222fde663af2994d97d3.jpg" height="400"></img>
+                <img data-src="https://www.quickmeme.com/img/1d/1ddd3c8b6503c36e84de315d54fe7132c8616a709c31222fde663af2994d97d3.jpg" height="400"></img>
               </div>
               Note:
               SLA, Uptime, Alerts
@@ -128,7 +128,7 @@
               <br/>
               <br/>
               <div style="text-align: right">
-                <a href="http://codingcoffee.dev/" target="_blank">Ameya Shenoy</a>
+                <a href="https://codingcoffee.dev/" target="_blank">Ameya Shenoy</a>
               </div>
             </textarea>
           </section>