diff --git a/pkgs/development/libraries/libmypaint/default.nix b/pkgs/development/libraries/libmypaint/default.nix
index a3361997774e..91e0b5ef0722 100644
--- a/pkgs/development/libraries/libmypaint/default.nix
+++ b/pkgs/development/libraries/libmypaint/default.nix
@@ -2,39 +2,34 @@
 , autoconf
 , automake
 , fetchFromGitHub
-, fetchpatch
 , glib
 , intltool
 , json_c
 , libtool
 , pkgconfig
+, python2
 }:
 
 stdenv.mkDerivation rec {
   pname = "libmypaint";
-  version = "1.3.0";
+  version = "1.4.0";
+
+  outputs = [ "out" "dev" ];
 
   src = fetchFromGitHub {
     owner = "mypaint";
     repo = "libmypaint";
     rev = "v${version}";
-    sha256 = "0b7aynr6ggigwhjkfzi8x3dwz15blj4grkg9hysbgjh6lvzpy9jc";
+    sha256 = "1ynm2g2wdb9zsymncndlgs6gpcbsa122n52d11161jrj5nrdliaq";
   };
 
-  patches = [
-    # build with automake 1.16
-    (fetchpatch {
-      url = https://github.com/mypaint/libmypaint/commit/40d9077a80be13942476f164bddfabe842ab2a45.patch;
-      sha256 = "1dclh7apgvr2bvzy9z3rgas3hk9pf2hpf5h52q94kmx8s4a47qpi";
-    })
-  ];
-
   nativeBuildInputs = [
     autoconf
     automake
     intltool
     libtool
     pkgconfig
+    python2
   ];
 
   buildInputs = [