diff --git a/requirements.txt b/requirements.txt
index 6b6b1ff..aa47398 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ idna==2.8
 incremental==17.5.0
 lxml==4.4.0
 parsel==1.5.1
-pyasn1==0.4.6
+pyasn1==0.6.4
 pyasn1-modules==0.2.5
 pycparser==2.19
 PyDispatcher==2.0.5