diff --git a/.github/workflows/jekyll.yml b/.github/workflows/jekyll.yml
index 64df081..f01cc1a 100644
--- a/.github/workflows/jekyll.yml
+++ b/.github/workflows/jekyll.yml
@@ -2,9 +2,9 @@ name: Jekyll site CI
 
 on:
   push:
-    branches: [ master ]
+    branches: [ main ]
   pull_request:
-    branches: [ master ]
+    branches: [ main ]
 
 jobs:
   build:
diff --git a/cheatsheet/index.html b/cheatsheet/index.html
index 6355f3f..9495952 100644
--- a/cheatsheet/index.html
+++ b/cheatsheet/index.html
@@ -256,7 +256,7 @@ <h2>Mathematical</h2>
   </section>
 
   <footer>
-    <a href="https://github.com/openscad/openscad.github.com/tree/master/cheatsheet" target="_blank">Edit me on GitHub!</a><br/>
+    <a href="https://github.com/openscad/openscad.github.com/tree/main/cheatsheet" target="_blank">Edit me on GitHub!</a><br/>
     By <a href="http://www.peteruithoven.nl" target="_blank">Peter Uithoven</a> @ <a href="http://www.fablabamersfoort.nl" target="_blank">Fablab Amersfoort</a> (<a href="http://freedomdefined.org/Licenses/CC-BY" target="_blank">CC-BY</a>)
   </footer>
 </body>
diff --git a/cheatsheet/snapshot.html b/cheatsheet/snapshot.html
index e698454..ae0d3f7 100644
--- a/cheatsheet/snapshot.html
+++ b/cheatsheet/snapshot.html
@@ -257,7 +257,7 @@ <h2>Mathematical</h2>
   </section>
 
   <footer>
-    <a href="https://github.com/openscad/openscad.github.com/tree/master/cheatsheet" target="_blank">Edit me on GitHub!</a><br/>
+    <a href="https://github.com/openscad/openscad.github.com/tree/main/cheatsheet" target="_blank">Edit me on GitHub!</a><br/>
     By <a href="http://www.peteruithoven.nl" target="_blank">Peter Uithoven</a> @ <a href="http://www.fablabamersfoort.nl" target="_blank">Fablab Amersfoort</a> (<a href="http://freedomdefined.org/Licenses/CC-BY" target="_blank">CC-BY</a>)
   </footer>
 </body>