diff --git a/.gitignore b/.gitignore
index 75d136b..ee86e00 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,8 @@ obj/
 
 tools/merger/out/
 
+tools/doc/index.gen.md.html
+
 tools/doc/sfw.h
 tools/doc/sfw.cpp