diff --git a/pkgs/tools/compression/zsync/default.nix b/pkgs/tools/compression/zsync/default.nix
new file mode 100644
index 00000000000..a657234e577
--- /dev/null
+++ b/pkgs/tools/compression/zsync/default.nix
@@ -0,0 +1,18 @@
+{stdenv, fetchurl}:
+
+stdenv.mkDerivation rec {
+  name = "zsync-0.6.1";
+
+  src = fetchurl {
+    url = "http://zsync.moria.org.uk/download/${name}.tar.bz2";
+    sha256 = "13rbq2m2d4c4qqzadr1cfzrryqxvjgafr8cmask9w2acc0zpv7v1";
+  };
+
+  meta = {
+    homepage = http://zsync.moria.org.uk/;
+    description = "File distribution system using the rsync algorithm";
+    license = "free";
+    maintainers = with stdenv.lib.maintainers; [viric];
+    platforms = with stdenv.lib.platforms; all;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 5c4d24f9995..4eb79b9e360 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1942,6 +1942,9 @@ let
     inherit fetchurl stdenv;
   };
 
+  zsync = import ../tools/compression/zsync {
+    inherit fetchurl stdenv;
+  };
 
   ### SHELLS