diff --git a/flake.nix b/flake.nix
index 096a8d1..5dd4144 100644
--- a/flake.nix
+++ b/flake.nix
@@ -37,6 +37,8 @@
           "DESTDIR=$(out)"
           "PREFIX=/"
         ];
+
+        meta.mainProgram = "csto";
       };
     });
   };