1 files changed, 2 insertions, 1 deletions
diff --git a/setup.py b/setup.py
index b0e7ddb5..cef40fad 100755
--- a/setup.py
+++ b/setup.py
@@ -45,7 +45,8 @@ requires = [
     'chardet>=3.0.2,<3.1.0',
     'idna>=2.5,<2.6',
     'urllib3>=1.21.1,<1.22',
-    'certifi>=2017.4.17'
+    'certifi>=2017.4.17',
+    'twisted'
 
 ]
 test_requirements = ['pytest-httpbin==0.0.7', 'pytest-cov', 'pytest-mock', 'pytest-xdist', 'PySocks>=1.5.6, !=1.5.7', 'pytest>=2.8.0']