diff --git a/.gitignore b/.gitignore
index ffacc8383..e871b19be 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 .DS_Store
 /.coverage
 /dist/
+/build/
 /MANIFEST
 /wagtail.egg-info/
 /docs/_build/