diff --git a/pkgs/tools/virtualization/ec2-ami-tools/default.nix b/pkgs/tools/virtualization/ec2-ami-tools/default.nix
index 1f04229c2c82..cbe53326339a 100644
--- a/pkgs/tools/virtualization/ec2-ami-tools/default.nix
+++ b/pkgs/tools/virtualization/ec2-ami-tools/default.nix
@@ -1,13 +1,15 @@
 { stdenv, fetchurl, unzip, ruby, openssl, makeWrapper }:
 
 stdenv.mkDerivation rec {
-  name = "ec2-ami-tools-1.4.0.9";
+  name = "ec2-ami-tools-${version}";
+
+  version = "1.5.3";
 
   buildInputs = [ unzip makeWrapper ];
 
   src = fetchurl {
-    url = "http://tarballs.nixos.org/${name}.zip";
-    sha256 = "0icpjr2ipch3f6cf4rg9x5z2y9k6a4rd85npsmw3a1ambs3dwxlq";
+    url = "http://s3.amazonaws.com/ec2-downloads/${name}.zip";
+    sha256 = "0n184nxc57alg25h5bslg0cs1z854sf7f52a820ihxxknrq2dy6i";
   };
 
   # Amazon EC2 requires that disk images are writable.  If they're