diff --git a/requirements.txt b/requirements.txt
index 2e486f3..b3e715a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,8 @@ MarkupSafe==0.23
 ordereddict; python_version < '2.7'
 passlib==1.6.2
 pbr==1.9.1
-psycopg2>=2.7.3.2
+psycopg2>=2.7.3.2; python_version > '2.7'
+psycopg2==2.7.3.2; python_version < '2.7'
 pycrypto==2.6.1
 pyrsistent==0.11.13
 python-dateutil==2.5.0