diff --git a/requirements.txt b/requirements.txt
index d028f82..47d4c3a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ lazy-object-proxy==1.3.1
 mccabe==0.6.1
 protobuf==3.6.1
 pyasn1-modules==0.2.2
-pyasn1==0.4.4
+pyasn1==0.4.8
 pylint==2.1.1
 python-mimeparse==1.6.0
 pytz==2018.7