diff --git a/pkgs/tools/backup/duplicity/default.nix b/pkgs/tools/backup/duplicity/default.nix
index d55783f7f2ce..d4b6b9a72eba 100644
--- a/pkgs/tools/backup/duplicity/default.nix
+++ b/pkgs/tools/backup/duplicity/default.nix
@@ -2,16 +2,16 @@
 
 python2Packages.buildPythonApplication rec {
   name = "duplicity-${version}";
-  version = "0.7.12";
+  version = "0.7.17";
 
   src = fetchurl {
-    url = "http://code.launchpad.net/duplicity/0.7-series/${version}/+download/${name}.tar.gz";
-    sha256 = "1rhgrz2lm9vbfdp2raykrih1c6n2lw5jd572z4dsz488m52avjqi";
+    url = "http://code.launchpad.net/duplicity/${stdenv.lib.versions.majorMinor version}-series/${version}/+download/${name}.tar.gz";
+    sha256 = "0jmh3h09680xyf33hzxxxl74bwz66zqhzvjlj7j89r9rz3qwa91p";
   };
 
   buildInputs = [ librsync makeWrapper python2Packages.wrapPython ];
   propagatedBuildInputs = with python2Packages; [
-    boto cffi cryptography ecdsa enum idna pygobject3
+    boto cffi cryptography ecdsa enum idna pygobject3 fasteners
     ipaddress lockfile paramiko pyasn1 pycrypto six
   ];
   checkInputs = with python2Packages; [ lockfile mock pexpect ];