diff --git a/pkgs/tools/backup/duply/default.nix b/pkgs/tools/backup/duply/default.nix
index 4fbf871efaf8..52074db4ba20 100644
--- a/pkgs/tools/backup/duply/default.nix
+++ b/pkgs/tools/backup/duply/default.nix
@@ -3,11 +3,11 @@
 }:
 
 stdenv.mkDerivation {
-  name = "duply-1.7.3";
+  name = "duply-1.9.1";
 
   src = fetchurl {
-    url = "mirror://sourceforge/project/ftplicity/duply%20%28simple%20duplicity%29/1.7.x/duply_1.7.3.tgz";
-    sha256 = "1lq5gwz69l8g4ki4anvmjdngbs9nin124j1zb9kbcnqj0s5jkbp0";
+    url = "mirror://sourceforge/project/ftplicity/duply%20%28simple%20duplicity%29/1.9.x/duply_1.9.1.tgz";
+    sha256 = "1igg8nc0i1xn8k1xxmphsg019b1yx8ln86hhqm6f4pd565d1rwg5";
   };
 
   buildInputs = [ txt2man makeWrapper ];