1 files changed, 3 insertions, 1 deletions
diff --git a/setup.py b/setup.py
index 9812a4f4..4b1dc3b0 100644
--- a/setup.py
+++ b/setup.py
@@ -40,7 +40,9 @@ import sys
 try:
     from setuptools import setup
     kw = {
-        'install_requires': 'pycrypto >= 2.1, != 2.4',
+        'install_requires': ['pycrypto >= 2.1, != 2.4',
+                             'ecdsa',
+                             ],
     }
 except ImportError:
     from distutils.core import setup