diff --git a/pkgs/misc/themes/materia-theme/default.nix b/pkgs/misc/themes/materia-theme/default.nix
index 8f2cdb0fcff..0dd490a35b5 100644
--- a/pkgs/misc/themes/materia-theme/default.nix
+++ b/pkgs/misc/themes/materia-theme/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   name = "materia-theme-${version}";
-  version = "20180519";
+  version = "20180928";
 
   src = fetchFromGitHub {
     owner = "nana-4";
     repo = "materia-theme";
     rev = "v${version}";
-    sha256 = "0javva2a3kmwb7xss2zmbpc988gagrkjgxncy7i1jifyvbnamf70";
+    sha256 = "0v4mvc4rrf3jwf77spn9f5sqxp72v66k2k467r0aw3nglcpm4wpv";
   };
 
   nativeBuildInputs = [ gnome3.glib libxml2 bc ];