diff --git a/optional-requirements.txt b/optional-requirements.txt
index 09495ce..bfbc198 100644
--- a/optional-requirements.txt
+++ b/optional-requirements.txt
@@ -7,4 +7,4 @@ xlrd==0.7.3
 pygeoip==0.2.3
 httpagentparser==1.0.5
 pytz==2012c
-pymongo==2.1.1
+pymongo==2.5.2