[style] fixed extra requires typo

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index 776a477..ca83017 100644
--- a/setup.py
+++ b/setup.py
@@ -143,6 +143,6 @@ setup(
         # needed for leap.common.http
         #  service_identity needed for propper hostname identification,
         #  see http://twistedmatrix.com/documents/current/core/howto/ssl.html
-        'Twisted':  ["Twisted>=14.0.2", "service_identity", "zope.insterface"]
+        'Twisted':  ["Twisted>=14.0.2", "service_identity", "zope.interface"]
     },
 )