diff --git a/pkgs/nim-packages/groupchat.nix b/pkgs/nim-packages/groupchat.nix
index 01af403..7bfcde0 100644
--- a/pkgs/nim-packages/groupchat.nix
+++ b/pkgs/nim-packages/groupchat.nix
@@ -1,10 +1,14 @@
-{ stdenv, buildNimblePackage, gnunet, git, makeWrapper }:
+{ stdenv, fetchgit, buildNimblePackage, gnunet, makeWrapper }:
 
 let
   gnunet_nim = buildNimblePackage rec {
     name = "gnunet_nim-${version}";
     version = "0.1.0";
-    src = /home/christian/projects/gnunet_nim;
+    src = fetchgit {
+      url =  https://git.gnunet.org/gnunet-nim.git;
+      rev = "1fce7e265d2c896cc5c385c4cd818e399121f822";
+      sha256 = "19qkw0ga109570w1l7pwgv68dvy8mz2c8q78ijkc3xsx6y3rizb2";
+    };
     
     buildInputs = [ gnunet ];
   };
@@ -12,11 +16,16 @@ in
 buildNimblePackage rec {
   name = "groupchat-${version}";
   version = "0.1.0";
-  src = /home/christian/projects/groupchat;
+
+  src = fetchgit {
+    url =  https://git.gnunet.org/groupchat.git;
+    rev = "15c4d7e6e3b5691e43a7b85748c1e123d288e8f7";
+    sha256 = "1f48xm7fhxlx1bxiv1h607p385mlr6fd8sxm2h6gynnsnmh8wgg5";
+  };
 
   nimDeps = [ gnunet_nim ];
 
-  buildInputs = [ git makeWrapper ];
+  buildInputs = [ makeWrapper ];
 
   postInstall = ''
     wrapProgram $out/bin/groupchat --prefix LD_LIBRARY_PATH : ${gnunet}/lib --prefix PATH : ${gnunet}/bin