diff --git a/pkgs/servers/mqtt/mosquitto/default.nix b/pkgs/servers/mqtt/mosquitto/default.nix
index 48058cf0d211..94f77b5dfdaa 100644
--- a/pkgs/servers/mqtt/mosquitto/default.nix
+++ b/pkgs/servers/mqtt/mosquitto/default.nix
@@ -58,6 +58,8 @@ stdenv.mkDerivation rec {
     popd
   '';
 
+  outputs = [ "out" "dev" "lib" ];
+
   nativeBuildInputs = [ cmake docbook_xsl libxslt ];
 
   buildInputs = [