diff --git a/requirements.txt b/requirements.txt
index ae3c175..94832f2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,3 +3,4 @@ lxml==3.1beta1
 pyenchant==1.6.5
 pydns>=2.3.6
 BeautifulSoup4
+pycrypto