diff --git a/README.md b/README.md
index a65b787..041a75d 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,6 @@ These are large blogs/websites similar to the ones in the previous category that
   <li>[<a href="https://designmodo.com/feed/">RSS</a>] <a href="https://designmodo.com/">Design Modo</a></li>
   <li>[<a href="https://feeds.dzone.com/webdev">RSS</a>] <a href="https://dzone.com/web-development-programming-tutorials-tools-news">DZone Web Dev</a></li>
   <li>[<a href="https://www.filamentgroup.com/lab/atom.xml">RSS</a>] <a href="https://filamentgroup.com/lab/">Filament Group, Inc: Lab</a></li>
-  <li>[<a href="https://blog.fullstacktraining.com/rss/">RSS</a>] <a href="https://blog.fullstacktraining.com/">Full Stack Training</a></li>
   <li>[<a href="https://gomakethings.com/feed/index.xml">RSS</a>] <a href="https://gomakethings.com">Go Make Things</a></li>
   <li>[<a href="https://www.blog.gov.uk/feed/">RSS</a>] <a href="https://www.blog.gov.uk">GOV.UK Blogs</a></li>
   <li>[<a href="https://feed.infoq.com/javascript/">RSS</a>] <a href="https://www.infoq.com/javascript/">InfoQ - JavaScript</a></li>
@@ -85,7 +84,7 @@ These are large blogs/websites similar to the ones in the previous category that
   <li>[<a href="https://www.nngroup.com/feed/rss/">RSS</a>] <a href="https://www.nngroup.com/articles">Nielsen Norman Group</a></li>
   <li>[<a href="https://developer.paciellogroup.com/feed/">RSS</a>] <a href="https://developer.paciellogroup.com">Paciello Group Blog</a></li>
   <li>[<a href="https://scotch.io/feed">RSS</a>] <a href="https://scotch.io/">Scotch.io</a></li>
-  <li>[<a href="https://www.sitepen.com/feed/">RSS</a>] <a href="https://www.sitepen.com">SitePen</a></li>
+  <li>[<a href="https://www.sitepen.com/rss.xml">RSS</a>] <a href="https://www.sitepen.com">SitePen</a></li>
   <li>[<a href="https://feeds.telerik.com/blogs">RSS</a>] <a href="https://www.telerik.com/">Telerik</a></li>
   <li>[<a href="https://blog.teamtreehouse.com/feed">RSS</a>] <a href="https://blog.teamtreehouse.com">Treehouse Blog</a></li>
   <li>[<a href="https://www.twilio.com/blog/tag/javascript/feed">RSS</a>] <a href="https://www.twilio.com/blog/tag/javascript">Twilio - JavaScript</a></li>
@@ -270,7 +269,7 @@ These are browser blogs and feeds for technologies related to search, developer
   <li>[<a href="https://adblockplus.org/atom/?section=blog">RSS</a>] <a href="https://adblockplus.org/">AdBlock Plus Blog</a></li>
   <li>[<a href="https://blog.amp.dev/feed/">RSS</a>] <a href="https://blog.amp.dev">AMP Blog</a></li>
   <li>[<a href="https://brave.com/feed/">RSS</a>] <a href="https://brave.com">Brave Blog</a></li>
-  <li>[<a href="https://www.blog.google/products/chrome/rss">RSS</a>] <a href="https://www.blog.google/products/chrome/">Chrome Blog</a></li>
+  <li>[<a href="https://blog.google/products/chrome/rss/">RSS</a>] <a href="https://blog.google/products/chrome/">Chrome Blog</a></li>
   <li>[<a href="https://blog.chromium.org/feeds/posts/default">RSS</a>] <a href="https://blog.chromium.org/">Chromium Blog</a></li>
   <li>[<a href="https://spreadprivacy.com/rss/">RSS</a>] <a href="https://spreadprivacy.com/">DuckDuckGo Blog</a></li>
   <li>[<a href="https://blog.freedomscientific.com/feed/">RSS</a>] <a href="https://blog.freedomscientific.com/">Freedom Scientific</a></li>
@@ -341,9 +340,8 @@ These are similar to the multi-author blogs, but are blogs tied to a specific pr
   <li>[<a href="https://blog.logrocket.com/feed/">RSS</a>] <a href="https://blog.logrocket.com">LogRocket</a></li>
   <li>[<a href="https://www.machmetrics.com/speed-blog/feed/">RSS</a>] <a href="https://www.machmetrics.com/speed-blog">MachMetrics Speed Blog</a></li>
   <li>[<a href="https://netflixtechblog.com/feed">RSS</a>] <a href="https://netflixtechblog.com">Netflix TechBlog</a></li>
-  <li>[<a href="https://blog.npmjs.org/rss">RSS</a>] <a href="https://blog.npmjs.org/">npm blog</a></li>
   <li>[<a href="https://www.shimmercat.com/feed.xml">RSS</a>] <a href="https://www.shimmercat.com/">ShimmerCat</a></li>
-  <li>[<a href="https://engineering.shopify.com/blogs/engineering.atom">RSS</a>] <a href="https://engineering.shopify.com/blogs/engineering">Shopify Engineering</a></li>
+  <li>[<a href="https://shopify.engineering/blog.atom">RSS</a>] <a href="https://engineering.shopify.com/blogs/engineering">Shopify Engineering</a></li>
   <li>[<a href="https://speedcurve.com/blog/rss/">RSS</a>] <a href="https://speedcurve.com/blog/">Speed Matters Blog</a></li>
   <li>[<a href="https://feeds.feedburner.com/GiantRobotsSmashingIntoOtherGiantRobots">RSS</a>] <a href="https://thoughtbot.com/blog">thoughtbot</a></li>
   <li>[<a href="https://blog.twitter.com/engineering/en_us/blog.rss">RSS</a>] <a href="https://blog.twitter.com/engineering/en_us.html">Twitter Engineering</a></li>
diff --git a/frontend-feeds.opml b/frontend-feeds.opml
index 6430b52..46cc0fa 100644
--- a/frontend-feeds.opml
+++ b/frontend-feeds.opml
@@ -205,7 +205,7 @@
       <outline type="rss" title="AdBlock Plus Blog" text="AdBlock Plus Blog" htmlUrl="https://adblockplus.org/blog/" xmlUrl="https://adblockplus.org/atom/?section=blog"/>
       <outline type="rss" title="AMP Blog" text="AMP Blog" htmlUrl="https://blog.amp.dev/" xmlUrl="https://blog.amp.dev/feed/"/>
       <outline type="rss" title="Brave Blog" text="Brave Blog" htmlUrl="https://brave.com/blog/" xmlUrl="https://brave.com/feed/"/>
-      <outline type="rss" title="Chrome Blog" text="Chrome Blog" htmlUrl="https://www.blog.google/products/chrome/" xmlUrl="https://www.blog.google/products/chrome/rss"/>
+      <outline type="rss" title="Chrome Blog" text="Chrome Blog" htmlUrl="https://blog.google/products/chrome/" xmlUrl="https://blog.google/products/chrome/rss"/>
       <outline type="rss" title="Chromium Blog" text="Chromium Blog" htmlUrl="https://blog.chromium.org/" xmlUrl="https://blog.chromium.org/feeds/posts/default"/>
       <outline type="rss" title="DuckDuckGo Blog" text="DuckDuckGo Blog" htmlUrl="https://spreadprivacy.com/" xmlUrl="https://spreadprivacy.com/rss/"/>
       <outline type="rss" title="Freedom Scientific" text="Freedom Scientific" htmlUrl="https://blog.freedomscientific.com/" xmlUrl="https://blog.freedomscientific.com/feed/"/>
@@ -264,9 +264,8 @@
       <outline type="rss" title="LogRocket" text="LogRocket" htmlUrl="https://blog.logrocket.com/" xmlUrl="https://blog.logrocket.com/feed/"/>
       <outline type="rss" title="MachMetrics Speed Blog" text="MachMetrics Speed Blog" htmlUrl="https://www.machmetrics.com/speed-blog/" xmlUrl="https://www.machmetrics.com/speed-blog/feed/"/>
       <outline type="rss" title="Netflix TechBlog" text="Netflix TechBlog" htmlUrl="https://netflixtechblog.com/" xmlUrl="https://netflixtechblog.com/feed"/>
-      <outline type="rss" title="npm blog" text="npm blog" htmlUrl="https://blog.npmjs.org/" xmlUrl="https://blog.npmjs.org/rss"/>
       <outline type="rss" title="ShimmerCat Blog" text="ShimmerCat Blog" htmlUrl="https://www.shimmercat.com/blog/" xmlUrl="https://www.shimmercat.com/feed.xml"/>
-      <outline type="rss" title="Shopify Engineering" text="Shopify Engineering" htmlUrl="https://engineering.shopify.com/blogs/engineering" xmlUrl="https://engineering.shopify.com/blogs/engineering.atom"/>
+      <outline type="rss" title="Shopify Engineering" text="Shopify Engineering" htmlUrl="https://engineering.shopify.com/blogs/engineering" xmlUrl="https://shopify.engineering/blog.atom"/>
       <outline type="rss" title="Speed Matters Blog" text="Speed Matters Blog" htmlUrl="https://speedcurve.com/blog/" xmlUrl="https://speedcurve.com/blog/rss/"/>
       <outline type="rss" title="thoughtbot" text="thoughtbot" htmlUrl="https://thoughtbot.com/blog" xmlUrl="https://feeds.feedburner.com/GiantRobotsSmashingIntoOtherGiantRobots"/>
       <outline type="rss" title="Twitter Engineering" text="Twitter Engineering" htmlUrl="https://blog.twitter.com/engineering/" xmlUrl="https://blog.twitter.com/engineering/en_us/blog.rss"/>