diff --git a/pkgs/development/libraries/at-spi2-core/default.nix b/pkgs/development/libraries/at-spi2-core/default.nix
index b49d1ddb804..256865aefb9 100644
--- a/pkgs/development/libraries/at-spi2-core/default.nix
+++ b/pkgs/development/libraries/at-spi2-core/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
     sha256 = "0xna0gnlqvzy6209klirywcm7ianazshg6pkk828g07bnrywgvhs";
   };
 
-  outputs = [ "out" "doc" ];
+  outputs = [ "dev" "out" "doc" ];
 
   buildInputs = [
     python pkgconfig popt  intltool dbus_glib