diff --git a/pkgs/tools/X11/dex/default.nix b/pkgs/tools/X11/dex/default.nix
index d147ef4a70c1..2a3a406135b3 100644
--- a/pkgs/tools/X11/dex/default.nix
+++ b/pkgs/tools/X11/dex/default.nix
@@ -3,16 +3,17 @@
 stdenv.mkDerivation rec {
   program = "dex";
   name = "${program}-${version}";
-  version = "0.7";
+  version = "0.8.0";
 
   src = fetchFromGitHub {
     owner = "jceb";
     repo = program;
     rev = "v${version}";
-    sha256 = "041ms01snalapapaniabr92d8iim1qrxian626nharjmp2rd69v5";
+    sha256 = "13dkjd1373mbvskrdrp0865llr3zvdr90sc6a6jqswh3crmgmz4k";
   };
 
   propagatedBuildInputs = [ python3 ];
+  nativeBuildInputs = [ python3.pkgs.sphinx ];
   makeFlags = [ "PREFIX=$(out)" "VERSION=$(version)" ];
 
   meta = {