diff --git a/pkgs/tools/networking/p2p/libtorrent/default.nix b/pkgs/tools/networking/p2p/libtorrent/default.nix
index ea376fd2a7bd..132762c3b54f 100644
--- a/pkgs/tools/networking/p2p/libtorrent/default.nix
+++ b/pkgs/tools/networking/p2p/libtorrent/default.nix
@@ -1,17 +1,17 @@
-{ stdenv, fetchurl, pkgconfig, openssl, libsigcxx }:
+{ stdenv, fetchurl, pkgconfig, openssl, libsigcxx, zlib }:
 
 let
-  version = "0.13.3";
+  version = "0.13.4";
 in
 stdenv.mkDerivation {
   name = "libtorrent-${version}";
 
   src = fetchurl {
     url = "http://libtorrent.rakshasa.no/downloads/libtorrent-${version}.tar.gz";
-    sha256 = "0xsnyd1hnfvfq67y5s0ddhj2lhxmfms4djblaa0d1y5phdkpsc9l";
+    sha256 = "0ma910br5vxrfpm4f4w4942lpmhwvqjnnf9h8vpf52fw35qhjkkh";
   };
 
-  buildInputs = [ pkgconfig openssl libsigcxx ];
+  buildInputs = [ pkgconfig openssl libsigcxx zlib ];
 
   meta = {
     homepage = "http://libtorrent.rakshasa.no/";
diff --git a/pkgs/tools/networking/p2p/rtorrent/default.nix b/pkgs/tools/networking/p2p/rtorrent/default.nix
index 78eaf81e8191..b843228f3f02 100644
--- a/pkgs/tools/networking/p2p/rtorrent/default.nix
+++ b/pkgs/tools/networking/p2p/rtorrent/default.nix
@@ -3,11 +3,11 @@
 }:
 
 stdenv.mkDerivation rec {
-  name = "rtorrent-0.9.3";
+  name = "rtorrent-0.9.4";
 
   src = fetchurl {
     url = "http://libtorrent.rakshasa.no/downloads/${name}.tar.gz";
-    sha256 = "043krhsiawigf8yjd5qfkdn5iqrssph1705dsx5fgbxipr0wm4wy";
+    sha256 = "113yrrac75vqi4g8r6bgs0ggjllj9bkg9shv08vqzdhkwqg2q2mw";
   };
 
   buildInputs = [ libtorrent ncurses pkgconfig libsigcxx curl zlib openssl ];