diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 1104b12..ecc11dd
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ pyasn1-modules==0.0.7
 pymongo==3.0.3
 python-dateutil==2.4.2
 requests==2.6.2
-rsa==3.2
+rsa==4.7
 simplejson==3.8.0
 six==1.9.0
 slackclient==0.16