diff --git a/src/tests.ts b/src/tests.ts
index 764e0f2..cf38378 100644
--- a/src/tests.ts
+++ b/src/tests.ts
@@ -1,7 +1,7 @@
 import { Schema as S } from "@effect/schema"
 import { reaction, runInAction } from "mobx"
 import type { Simplify } from "type-fest"
-import { Jsonifiable, MutableTaggedClass } from "./Schema"
+import { composeJsonifiable, MutableTaggedClass } from "./Schema"
 import { ObservableClass } from "./Schema/MobX"
 import type { ExtendAll } from "./Types"
 
@@ -26,7 +26,7 @@ class User extends MutableTaggedClass<User>()("User", {
 ) {}
 
 const JsonifiableUser = User.pipe(
-    Jsonifiable(S.Struct({
+    composeJsonifiable(S.Struct({
         ...User.fields,
         id: S.BigInt,
     }))