diff --git a/dropbox/dropbox.py b/dropbox/dropbox.py
index 78be1cf2..c952172a 100644
--- a/dropbox/dropbox.py
+++ b/dropbox/dropbox.py
@@ -4,7 +4,7 @@
     'create_session',
 ]
 
-__version__ = '6.6.1'
+__version__ = '6.6.2'
 
 import contextlib
 import json
diff --git a/setup.py b/setup.py
index 40d8b83e..0a544e94 100644
--- a/setup.py
+++ b/setup.py
@@ -23,8 +23,9 @@
 version = eval(line.split('=', 1)[1])
 
 install_reqs = ['urllib3',
-                'requests>=2.6.2',
-                'six>=1.3.0']
+                'requests>=2.5.1,!=2.6.1',
+                'six>=1.3.0',
+                'typing>=3.5.2']
 assert sys.version_info >= (2, 6), "We only support Python 2.6+"
 
 with open('LICENSE') as f: