diff --git a/requirements.txt b/requirements.txt
index d6c91b24..ac6a2c9f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,6 @@ flask-babel==0.11.1
 lxml==3.7.1
 ndg-httpsclient==0.4.2
 pyasn1==0.1.9
-pyasn1-modules==0.0.8
 pygments==2.1.3
 pyopenssl==16.2.0
 python-dateutil==2.5.3