diff --git a/pkgs/development/libraries/libui/default.nix b/pkgs/development/libraries/libui/default.nix
index e333e73de3f..57385d1b410 100644
--- a/pkgs/development/libraries/libui/default.nix
+++ b/pkgs/development/libraries/libui/default.nix
@@ -1,21 +1,22 @@
-{ stdenv, fetchgit, cmake, pkgconfig, gtk3, Cocoa }:
+{ stdenv, fetchFromGitHub, cmake, pkgconfig, gtk3, Cocoa }:
 
 let
   shortName = "libui";
-  version   = "3.1a";
+  version   = "4.1a";
   backend   = if stdenv.isDarwin then "darwin" else "unix";
 in
 
 stdenv.mkDerivation {
   name = "${shortName}-${version}";
-  src  = fetchgit {
-    url    = "https://github.com/andlabs/libui.git";
-    rev    = "6ebdc96b93273c3cedf81159e7843025caa83058";
-    sha256 = "1lpbfa298c61aarlzgp7vghrmxg1274pzxh1j9isv8x758gk6mfn";
+  src  = fetchFromGitHub {
+    owner  = "andlabs";
+    repo   = "libui";
+    rev    = "alpha4.1";
+    sha256 = "0bm6xvqk4drg2kw6d304x6mlfal7gh8mbl5a9f0509smmdzgdkwm";
   };
 
   nativeBuildInputs = [ cmake pkgconfig ];
-  buildInputs = stdenv.lib.optional stdenv.isLinux gtk3
+  propagatedBuildInputs = stdenv.lib.optional stdenv.isLinux gtk3
     ++ stdenv.lib.optionals stdenv.isDarwin [ Cocoa ];
 
   preConfigure = stdenv.lib.optionalString stdenv.isDarwin ''