diff --git a/pkgs/development/libraries/ccrtp/1.8.nix b/pkgs/development/libraries/ccrtp/1.8.nix
new file mode 100644
index 000000000000..26e7050a60df
--- /dev/null
+++ b/pkgs/development/libraries/ccrtp/1.8.nix
@@ -0,0 +1,20 @@
+{ stdenv, fetchurl, openssl, pkgconfig, libgcrypt, commoncpp2 }:
+
+stdenv.mkDerivation {
+  name = "ccrtp-1.8.0";
+
+  src = fetchurl {
+    url = mirror://gnu/ccrtp/ccrtp-1.8.0.tar.gz;
+    sha256 = "0wr4dandlfajhmg90nqyvwv61ikn9vdycji001310y3c4zfysprn";
+  };
+
+  buildInputs = [ openssl pkgconfig libgcrypt commoncpp2 ];
+
+  meta = { 
+    description = "GNU ccRTP is an implementation of RTP, the real-time transport protocol from the IETF";
+    homepage = "http://www.gnu.org/software/ccrtp/";
+    license = "GPLv2";
+    maintainers = [ stdenv.lib.maintainers.marcweber ];
+    platforms = stdenv.lib.platforms.linux;
+  };
+}
diff --git a/pkgs/development/libraries/libzrtpcpp/1.6.nix b/pkgs/development/libraries/libzrtpcpp/1.6.nix
new file mode 100644
index 000000000000..767314cdcae9
--- /dev/null
+++ b/pkgs/development/libraries/libzrtpcpp/1.6.nix
@@ -0,0 +1,20 @@
+{ stdenv, fetchurl, commoncpp2, openssl, pkgconfig, ccrtp }:
+
+stdenv.mkDerivation rec {
+  name = "libzrtpcpp-1.6.0";
+
+  src = fetchurl {
+    url = "mirror://gnu/ccrtp/${name}.tar.gz";
+    sha256 = "17aayr4f27rp4fvminxn6jx7kq56kkk341l7ypqb9h0k6kns27kb";
+  };
+
+  buildInputs = [ commoncpp2 openssl pkgconfig ccrtp ];
+
+  meta = { 
+    description = "GNU RTP stack for the zrtp protocol developed by Phil Zimmermann";
+    homepage = "http://www.gnutelephony.org/index.php/GNU_ZRTP";
+    license = "GPLv2";
+    maintainers = [ stdenv.lib.maintainers.marcweber ];
+    platforms = stdenv.lib.platforms.linux;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 76af12f962e6..4df70acd39c0 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2902,6 +2902,7 @@ let
   scmccid = callPackage ../development/libraries/scmccid { };
 
   ccrtp = callPackage ../development/libraries/ccrtp { };
+  ccrtp_1_8 = callPackage ../development/libraries/ccrtp/1.8.nix { };
 
   cgui = callPackage ../development/libraries/cgui {};
 
@@ -3881,6 +3882,9 @@ let
   libzip = callPackage ../development/libraries/libzip { };
 
   libzrtpcpp = callPackage ../development/libraries/libzrtpcpp { };
+  libzrtpcpp_1_6 = callPackage ../development/libraries/libzrtpcpp/1.6.nix {
+    ccrtp = ccrtp_1_8;
+  };
 
   lightning = callPackage ../development/libraries/lightning { };
 
@@ -6976,6 +6980,8 @@ let
   twinkle = callPackage ../applications/networking/twinkle {
     qt = qt3;
     boost = boostFull;
+    ccrtp = ccrtp_1_8;
+    libzrtpcpp = libzrtpcpp_1_6;
   };
 
   unison = callPackage ../applications/networking/sync/unison {