diff --git a/Formula/charm-tools.rb b/Formula/charm-tools.rb
index ce2ae287b6..ffce4dc160 100644
--- a/Formula/charm-tools.rb
+++ b/Formula/charm-tools.rb
@@ -66,8 +66,8 @@ class CharmTools < Formula
   end
 
   resource "cryptography" do
-    url "https://files.pythonhosted.org/packages/ec/5f/d5bc241d06665eed93cd8d3aa7198024ce7833af7a67f6dc92df94e00588/cryptography-1.8.1.tar.gz"
-    sha256 "323524312bb467565ebca7e50c8ae5e9674e544951d28a2904a50012a8828190"
+    url "https://files.pythonhosted.org/packages/81/fb/97d649657687d483753880cf663cf78015e1b8fb495d565feb49f1d56a24/cryptography-1.8.2.tar.gz"
+    sha256 "8e88ebac371a388024dab3ccf393bf3c1790d21bc3c299d5a6f9f83fb823beda"
   end
 
   resource "ecdsa" do