diff --git a/.hgignore b/.hgignore
--- a/.hgignore
+++ b/.hgignore
@@ -51,6 +51,7 @@
 cscope.*
 .idea/*
 .asv/*
+.pytype/*
 i18n/hg.pot
 locale/*/LC_MESSAGES/hg.mo
 hgext/__index__.py