diff --git a/pkgs/data/themes/matcha/default.nix b/pkgs/data/themes/matcha/default.nix
index 5297fe056837..08d0f51094da 100644
--- a/pkgs/data/themes/matcha/default.nix
+++ b/pkgs/data/themes/matcha/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "matcha-gtk-theme";
-  version = "2021-02-04";
+  version = "2021-04-05";
 
   src = fetchFromGitHub {
     owner = "vinceliuice";
     repo = pname;
     rev = version;
-    sha256 = "sha256-CDym+yqLu7QpqmdUpXAbJTCjQf/r9D1sl7ZdpaWaXFE=";
+    sha256 = "0bm7hr4lqqz3z2miif38628r4qcy7i5hdk6sm0ngjacm43cl0qvg";
   };
 
   buildInputs = [ gdk-pixbuf librsvg ];
@@ -16,16 +16,18 @@ stdenv.mkDerivation rec {
   propagatedUserEnvPkgs = [ gtk-engine-murrine ];
 
   installPhase = ''
+    runHook preInstall
     patchShebangs .
     mkdir -p $out/share/themes
     name= ./install.sh -d $out/share/themes
     install -D -t $out/share/gtksourceview-3.0/styles src/extra/gedit/matcha.xml
     mkdir -p $out/share/doc/${pname}
     cp -a src/extra/firefox $out/share/doc/${pname}
+    runHook postInstall
   '';
 
   meta = with lib; {
-    description = "A stylish flat Design theme for GTK based desktop environments";
+    description = "A stylish flat design theme for GTK based desktop environments";
     homepage = "https://vinceliuice.github.io/theme-matcha";
     license = licenses.gpl3Only;
     platforms = platforms.unix;