diff --git a/.gitignore b/.gitignore
index fc0b7c0..38ba511 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,3 +20,7 @@
 .TemporaryItems
 .webprj
 nbproject
+
+# Ignore documentation folders generated by the extension builder.
+doc/
+Documentation.tmpl/