diff --git a/requirements.txt b/requirements.txt
index 49d3228..70285a4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ mccabe==0.6.1
 multidict==4.1.0
 oauth2client==4.1.2
 pip-chill==0.1.7
-pyasn1==0.4.2
+pyasn1==0.4.8
 pyasn1-modules==0.2.1
 pylint==1.8.2
 requests==2.18.4