diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index eff2d98..f73607b
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ pyasn1==0.1.9
 pyasn1-modules==0.0.8
 pycparser==2.14
 requests==2.8.1
-rsa==3.2
+rsa==4.7
 six==1.10.0
 uritemplate.py==0.3.0
 wsgiref==0.1.2