diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index eff2d98..05a7521
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ ipaddress==1.0.14
 ndg-httpsclient==0.4.0
 oauth2client==1.5.1
 pyOpenSSL==0.15.1
-pyasn1==0.1.9
+pyasn1==0.6.3
 pyasn1-modules==0.0.8
 pycparser==2.14
 requests==2.8.1