diff --git a/pkgs/development/libraries/glibmm/default.nix b/pkgs/development/libraries/glibmm/default.nix
index 8417179dde19..6d15faf95490 100644
--- a/pkgs/development/libraries/glibmm/default.nix
+++ b/pkgs/development/libraries/glibmm/default.nix
@@ -12,6 +12,8 @@ stdenv.mkDerivation rec {
     sha256 = "c78654addeb27a1213bedd7cd21904a45bbb98a5ba2f2f0de2b2f1a5682d86cf";
   };
 
+  outputs = [ "dev" "out" ];
+
   nativeBuildInputs = [ pkgconfig gnum4 ];
   propagatedBuildInputs = [ glib libsigcxx ];