diff --git a/overlay.nix b/overlay.nix
index 72e97a1..864b192 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -23,6 +23,8 @@ let
 
       buildInputs = [ utf8proc harfbuzz libschrift ];
 
+      outputs = [ "out" "lib" "dev" "man" ];
+
       doCheck = true;
     };