diff --git a/pkgs/development/libraries/libhttpseverywhere/default.nix b/pkgs/development/libraries/libhttpseverywhere/default.nix
index 1e60a63fe06..961b8a77670 100644
--- a/pkgs/development/libraries/libhttpseverywhere/default.nix
+++ b/pkgs/development/libraries/libhttpseverywhere/default.nix
@@ -1,15 +1,15 @@
 {stdenv, fetchurl, gnome3, glib, json_glib, libxml2, libarchive, libsoup, gobjectIntrospection, meson, ninja, pkgconfig,  valadoc}:
 
 stdenv.mkDerivation rec {
-  major = "0.2";
-  minor = "10";
+  major = "0.4";
+  minor = "2";
   version = "${major}.${minor}";
 
   name = "libhttpseverywhere-${version}";
 
   src = fetchurl {
     url = "mirror://gnome/sources/libhttpseverywhere/${major}/libhttpseverywhere-${version}.tar.xz";
-    sha256 = "235f5b7f96188d800470871774e31696fbde085b63f65bd71434af8e9e6ac8aa";
+    sha256 = "0n850a4adsla6di8dylnadg07wblkdl28abrjvk6fzy8a1kjlx02";
   };
 
   nativeBuildInputs = [ gnome3.vala valadoc  gobjectIntrospection meson ninja pkgconfig ];
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   configurePhase = ''
     mkdir build
     cd build
-    meson.py --prefix "$out" ..
+    meson --prefix "$out" ..
   '';
 
   buildPhase = ''
diff --git a/pkgs/development/tools/build-managers/meson/default.nix b/pkgs/development/tools/build-managers/meson/default.nix
index 558b8acf70f..d4dbc6b46d2 100644
--- a/pkgs/development/tools/build-managers/meson/default.nix
+++ b/pkgs/development/tools/build-managers/meson/default.nix
@@ -1,13 +1,23 @@
-{ lib, python3Packages, fetchurl }:
-python3Packages.buildPythonPackage rec {
-  version = "0.35.0";
-  name = "meson-${version}";
+{ lib, python3Packages }:
+python3Packages.buildPythonApplication rec {
+  version = "0.40.0";
+  pname = "meson";
+  name = "${pname}-${version}";
 
-  src = fetchurl {
-    url = "mirror://pypi/m/meson/${name}.tar.gz";
-    sha256 = "0w4vian55cwcv2m5qzn73aznf9a0y24cszqb7dkpahrb9yrg25l3";
+  src = python3Packages.fetchPypi {
+    inherit pname version;
+    sha256 = "1hb6y5phzd5738rlpz78w8hfzk7sbxj81551mb7bbkkqz8ql1gjw";
   };
 
+  postFixup = ''
+    pushd $out/bin
+    # undo shell wrapper as meson tools are called with python
+    for i in *; do
+      mv ".$i-wrapped" "$i"
+    done
+    popd
+  '';
+
   meta = with lib; {
     homepage = http://mesonbuild.com;
     description = "SCons-like build system that use python as a front-end language and Ninja as a building backend";