diff --git a/.gitignore b/.gitignore
index ee7c6ec370cd7c1f3435b41d915e24023c456af7..2b30f7938c8a1672acd0a14b7051af12c37889fb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 *.DS_Store
 build/
+build_doc/
 *.user
 
 .vscode