diff --git a/hgext/fsmonitor/pywatchman/capabilities.py b/hgext/fsmonitor/pywatchman/capabilities.py
--- a/hgext/fsmonitor/pywatchman/capabilities.py
+++ b/hgext/fsmonitor/pywatchman/capabilities.py
@@ -29,8 +29,6 @@
 # no unicode literals
 from __future__ import absolute_import, division, print_function
 
-import re
-
 
 def parse_version(vstr):
     res = 0