diff --git a/doc/org/.gitignore b/doc/org/.gitignore
index 5cbd8674942d95a92d1b335143b4506bfe1db808..1317a8bee96a4dcaa62dfd3da1784212e5950acf 100644
--- a/doc/org/.gitignore
+++ b/doc/org/.gitignore
@@ -16,3 +16,4 @@ sample.ltl
 *.hoa
 g++wrap
 *.fls
+sitemap.org