diff --git a/setup.py b/setup.py
index 54d69874..52b6f382 100644
--- a/setup.py
+++ b/setup.py
@@ -55,7 +55,7 @@ setup(
 
     install_requires=[
         'six>=1.10.0',
-        'graphql-core>=0.4.9',
+        'graphql-core>=0.5.0',
         'graphql-relay==0.3.3',
         'iso8601',
     ],