diff --git a/src/utils/extraUsage.ts b/src/utils/extraUsage.ts
index b099684..2fda881 100644
--- a/src/utils/extraUsage.ts
+++ b/src/utils/extraUsage.ts
@@ -21,3 +21,4 @@ export function isBilledAsExtraUsage(
 
   return isOpus46 || isSonnet46
 }
+