diff --git a/annotations/index.d.ts b/annotations/index.d.ts
index 42c662a..75de9ce 100644
--- a/annotations/index.d.ts
+++ b/annotations/index.d.ts
@@ -15,7 +15,7 @@ export type Annotator = (value: Json, options?: OutputFormat | ValidationOptions
 export const interpret: (compiledSchema: CompiledSchema, value: JsonNode, options?: OutputFormat | ValidationOptions) => JsonNode;
 
 export class ValidationError extends Error {
-  public output: Output;
+  public output: Output & { valid: false };
 
   public constructor(output: Output);
 }
diff --git a/lib/index.d.ts b/lib/index.d.ts
index b361465..b9799e0 100644
--- a/lib/index.d.ts
+++ b/lib/index.d.ts
@@ -56,7 +56,7 @@ export const setShouldValidateSchema: (isEnabled: boolean) => void;
 export const getShouldValidateSchema: () => boolean;
 
 export class InvalidSchemaError extends Error {
-  public output: Output;
+  public output: Output & { valid: false };
 
   public constructor(output: Output);
 }
diff --git a/lib/schema.spec.ts b/lib/schema.spec.ts
index 0ee02de..cd44a4d 100644
--- a/lib/schema.spec.ts
+++ b/lib/schema.spec.ts
@@ -1,4 +1,5 @@
 import { describe, it, expect, afterEach } from "vitest";
+import { Agent, setGlobalDispatcher } from "undici";
 import { RetrievalError } from "@hyperjump/browser";
 import { registerSchema, unregisterSchema } from "./index.js";
 import { getSchema, hasDialect } from "./experimental.js";
@@ -9,6 +10,8 @@ import "../draft-07/index.js";
 import "../draft-04/index.js";
 
 
+setGlobalDispatcher(new Agent({ connect: { timeout: 100 } }));
+
 describe("Schema Parsing", () => {
   const testDomain = "https://test.hyperjump.io";
 
diff --git a/package.json b/package.json
index cf377f1..6021e58 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperjump/json-schema",
-  "version": "1.16.3",
+  "version": "1.16.4",
   "description": "A JSON Schema validator with support for custom keywords, vocabularies, and dialects",
   "type": "module",
   "main": "./stable/index.js",