diff --git a/example.py b/example.py
index 8d38d7d..bb61f76 100644
--- a/example.py
+++ b/example.py
@@ -96,7 +96,7 @@
           }
         }
     """,
-    variables=leetcode.GraphqlQueryVariables(title_slug="two-sum"),
+    variables=leetcode.GraphqlQueryGetQuestionDetailVariables(title_slug="two-sum"),
     operation_name="getQuestionDetail",
 )
 
diff --git a/setup.py b/setup.py
index 1323596..ae727f1 100644
--- a/setup.py
+++ b/setup.py
@@ -26,7 +26,8 @@
 # prerequisite: setuptools
 # http://pypi.python.org/pypi/setuptools
 
-REQUIRES = ["urllib3 >= 1.15", "six >= 1.10", "certifi", "python-dateutil", "requests"]
+with open("requirements.txt") as requirements:
+    REQUIRES = [req.replace("\n", "") for req in requirements.readlines()]
 
 setup(
     name=NAME,