diff --git a/.gitignore b/.gitignore
index e85ccca6..922ca7b8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,3 +35,4 @@ doc/nghttp2ver.h.rst
 doc/package_README.rst
 doc/tutorial-client.rst
 doc/tutorial-server.rst
+doc/nghttpx-howto.rst