diff --git a/requirements/dev.txt b/requirements/dev.txt
index 1a78b3b..3d0a1c9 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -1,5 +1,5 @@
 -r prod.txt
-Sphinx>=1.2.2
+Sphinx==1.8.5
 flake8>=2.1.0
 mock>=1.0.1
 pytest>=2.5.2
diff --git a/requirements/prod.txt b/requirements/prod.txt
index 37d7148..2c773fd 100644
--- a/requirements/prod.txt
+++ b/requirements/prod.txt
@@ -1,5 +1,5 @@
 elasticsearch>=2.0.0
-pymongo>=2.7
+pymongo==3.7.2
 redis>=2.0
 requests>=2.0.0
 six<2.0
diff --git a/setup.py b/setup.py
index 567acbf..f0edd5b 100755
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 from setuptools import find_packages
 from setuptools import setup
 
-VERSION = ('0', '4', '10')
+VERSION = ('0', '5', '0')
 __version__ = '.'.join(VERSION)
 
 with open('README.md') as f:
diff --git a/tox.ini b/tox.ini
index 000fc35..eecbff2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.1
-envlist = lint,py27,py35
+envlist = lint,py27,py37
 skipsdist = True
 
 [testenv]