diff --git a/flake.nix b/flake.nix
index 98bf498c40..db48d1c8e9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -85,6 +85,7 @@
             description = workspaceToml.workspace.package.description;
             homepage = workspaceToml.workspace.package.repository;
             license = licenses.asl20;  # Maps from "Apache-2.0" in Cargo.toml
+            mainProgram = "goose";
           };
         };
 
@@ -117,4 +118,4 @@
         };
       }
     );
-}
\ No newline at end of file
+}