diff --git a/src/Schema/encodedAsPrismaJsonValue.ts b/src/Schema/encodedAsPrismaJsonValue.ts
index 9389bec..b58ac01 100644
--- a/src/Schema/encodedAsPrismaJsonValue.ts
+++ b/src/Schema/encodedAsPrismaJsonValue.ts
@@ -9,5 +9,5 @@ import type { PrismaJson } from "../Types"
  *
  * This is needed because Prisma's `JsonValue` is poorly implemented and does not work well with some types, such as readonly arrays.
  */
-export const encodedAsPrismaJsonValue = <A, R>(schema: Schema.Schema<A, JsonValue, R>) =>
-    schema as Schema.Schema<A, PrismaJson.JsonValue, R>
+export const encodedAsPrismaJsonValue = <A, E extends JsonValue, R>(schema: Schema.Schema<A, E, R>) =>
+    schema as unknown as Schema.Schema<A, PrismaJson.JsonValue, R>