diff --git a/src/App.svelte b/src/App.svelte
index 558e982..da7ed36 100644
--- a/src/App.svelte
+++ b/src/App.svelte
@@ -136,7 +136,7 @@
 <div class="container">
     <div class="head">
         <h1>Chroma.js Color Palette Helper</h1>
-        <p>This <a href="https://github.com/gka/chroma.js" target="_blank">chroma.js</a>-powered tool is here to help us  <a target="_blank" href="http://vis4.net/blog/posts/mastering-multi-hued-color-scales/">mastering multi-hued, multi-stops color scales</a>.</p>
+        <p>This <a href="https://github.com/gka/chroma.js" target="_blank">chroma.js</a>-powered tool is here to help us  <a target="_blank" href="https://www.vis4.net/blog/mastering-multi-hued-color-scales/">mastering multi-hued, multi-stops color scales</a>.</p>
     </div>
     <Card step="1" title="What kind of palette do you want to create?">
         <div class="row">
@@ -195,4 +195,4 @@
         <p>Created by <a href="https://vis4.net/blog">Gregor Aisch</a> for the sake of better
         use of colors in maps and data visualizations. Feel free to <a href="https://github.com/gka/palettes">fork on Github</a>.</p>
     </div>
-</div>
\ No newline at end of file
+</div>