diff --git a/lib/types.ts b/lib/types.ts
index 24a3984..1962c50 100644
--- a/lib/types.ts
+++ b/lib/types.ts
@@ -441,7 +441,7 @@ export type Effects = {
       port: number
       ssl: boolean
     }
-    http: {
+    http?: {
       // optional, will do TCP layer proxy only if not present
       headers: (headers: Record<string, string>) => Record<string, string>
     }