diff --git a/default.nix b/default.nix
index f09d297..99d403d 100644
--- a/default.nix
+++ b/default.nix
@@ -1,6 +1,6 @@
 { mkDerivation, aeson, base, bytestring, containers, directory
-, filepath, hspec, insert-ordered-containers, lens, lib, mtl
-, openapi3, optparse-applicative, prettyprinter, relude, tasty
+, filepath, hspec, http-media, insert-ordered-containers, lens, lib
+, mtl, openapi3, optparse-applicative, prettyprinter, relude, tasty
 , tasty-discover, tasty-golden, tasty-hspec, tasty-hunit, text
 , unordered-containers, yaml
 }:
@@ -12,7 +12,7 @@ mkDerivation {
   isExecutable = true;
   enableSeparateDataOutput = true;
   libraryHaskellDepends = [
-    aeson base bytestring containers directory filepath
+    aeson base bytestring containers directory filepath http-media
     insert-ordered-containers lens mtl openapi3 prettyprinter relude
     text unordered-containers yaml
   ];
@@ -23,6 +23,6 @@ mkDerivation {
     tasty-golden tasty-hspec tasty-hunit text yaml
   ];
   testToolDepends = [ tasty-discover ];
-  license = "unknown";
-  hydraPlatforms = lib.platforms.none;
+  description = "Tie allows generation of Haskell server stubs from OpenAPI (v 3.x) specifications.";
+  license = lib.licenses.asl20;
 }