diff --git a/requirements.txt b/requirements.txt
index b0f9b3716c..0f745ab7ce 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -42,7 +42,7 @@ PrettyTable>=0.6,<0.8
 psutil<1.0
 pyasn1
 pycrypto>=2.6
-pymongo>=2.2
+pymongo>=2.4
 pyOpenSSL
 pyparsing>=1.5.7,<2.0
 # OpenStack clients. None of these should have an upper bound