diff --git a/development.txt b/development.txt
index 238588ea..580dbc18 100644
--- a/development.txt
+++ b/development.txt
@@ -6,6 +6,7 @@ ipdb==0.11
 mock==2.0.0
 nose-randomly==1.2.5
 nose==1.3.7
+pathlib2==2.3.2
 pytz==2018.4
 rednose==1.3.0
 requests[security]==2.18.4