diff --git a/default.nix b/default.nix
index 18fd20f..5f29018 100644
--- a/default.nix
+++ b/default.nix
@@ -5,5 +5,7 @@ final: prev: {
     # official (chronological order)
 
     red = prev.callPackage ./pokered { };
+
+    yellow = prev.callPackage ./pokeyellow { };
   };
 }
diff --git a/pokeyellow/default.nix b/pokeyellow/default.nix
new file mode 100644
index 0000000..50463a5
--- /dev/null
+++ b/pokeyellow/default.nix
@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchFromGitHub, rgbds }:
+
+stdenv.mkDerivation rec {
+  pname = "pokeyellow";
+  version = "unstable-2021-06-20";
+
+  src = fetchFromGitHub {
+    owner = "pret";
+    repo = pname;
+    rev = "45c039801916713e4066644086de4d4940d5fa1d";
+    sha256 = "sha256-ISyoABYFMnx55OmBfBmO7vDLVb9nH6Ppc2Wir6crmPg=";
+  };
+
+  nativeBuildInputs = [ rgbds ];
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out
+    cp pokeyellow.gbc $out
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "ROM built from disassembly of Pokémon Yellow";
+    homepage = "https://github.com/pret/pokeyellow";
+    license = licenses.unfree;
+    maintainers = with maintainers; [ sbruder ];
+  };
+}