diff --git a/.hgignore b/.hgignore
index 733571e..552a6d1 100644
--- a/.hgignore
+++ b/.hgignore
@@ -22,6 +22,7 @@ dist/
 include/
 lib/
 bin/
+xdist/_version.py
 pytest_xdist.egg-info
 issue/
 3rdparty/