diff --git a/pkgs/games/gnome-hexgl/default.nix b/pkgs/games/gnome-hexgl/default.nix
index 6212c1bbec1..cfa9a0b81d0 100644
--- a/pkgs/games/gnome-hexgl/default.nix
+++ b/pkgs/games/gnome-hexgl/default.nix
@@ -2,7 +2,7 @@
 , fetchFromGitHub
 , ninja
 , meson
-, pkgconfig
+, pkg-config
 , gthree
 , gsound
 , epoxy
@@ -11,19 +11,19 @@
 
 stdenv.mkDerivation rec {
   pname = "gnome-hexgl";
-  version = "0.2.0";
+  version = "unstable-2020-07-24";
 
   src = fetchFromGitHub {
     owner = "alexlarsson";
     repo = "gnome-hexgl";
-    rev = version;
-    sha256 = "08iy2iciscd2wbhh6v4cpghx8r94v1ffbgla9yb3bcsdhlag0iw4";
+    rev = "f47a351055a235730795341dcd6b2397cc4bfa0c";
+    sha256 = "yZWGymaSUfnCP8VAEdDH64w0muSnRK/XPi1/IqTrE4k=";
   };
 
   nativeBuildInputs = [
     ninja
     meson
-    pkgconfig
+    pkg-config
   ];
 
   buildInputs = [