diff --git a/setup.py b/setup.py
index e6e8a40..7a95a1d 100644
--- a/setup.py
+++ b/setup.py
@@ -40,7 +40,7 @@
         'License :: OSI Approved :: MIT License'
     ],
     install_requires=[
-        'gevent-websocket', 'redis', 'graphql-core', 'promise<=1.0.1', 'future'
+        'gevent-websocket', 'redis', 'graphql-core', 'promise', 'future'
     ],
     test_suite='pytest',
     tests_require=tests_dep,