diff --git a/base.ts b/base.ts
index c8572f5f..82bdfba2 100644
--- a/base.ts
+++ b/base.ts
@@ -119,6 +119,7 @@ export const stages = {
 	dd: 10,
 	converter: 11,
 };
+Object.setPrototypeOf(stages, null);
 
 export type Stage = keyof typeof stages;