diff --git a/packages/lib/jobs/client/_internal/job.ts b/packages/lib/jobs/client/_internal/job.ts
index d9e1392cc..dce2f652b 100644
--- a/packages/lib/jobs/client/_internal/job.ts
+++ b/packages/lib/jobs/client/_internal/job.ts
@@ -17,7 +17,7 @@ export const ZSimpleTriggerJobOptionsSchema = z.object({
 });
 
 // Map the array to create a union of objects we may accept
-export type TriggerJobOptions<Definitions extends Array<JobDefinition> = []> = {
+export type TriggerJobOptions<Definitions extends ReadonlyArray<JobDefinition> = []> = {
   [K in keyof Definitions]: {
     id?: string;
     name: Definitions[K]['trigger']['name'];
diff --git a/packages/lib/jobs/client/client.ts b/packages/lib/jobs/client/client.ts
index eec92acb3..898dd0849 100644
--- a/packages/lib/jobs/client/client.ts
+++ b/packages/lib/jobs/client/client.ts
@@ -6,9 +6,7 @@ import { InngestJobProvider } from './inngest';
 import { LocalJobProvider } from './local';
 import { TriggerJobProvider } from './trigger';
 
-export class JobClient<T extends Array<JobDefinition> = []> {
-  private static _instance: JobClient;
-
+export class JobClient<T extends ReadonlyArray<JobDefinition> = []> {
   private _provider: JobClientProvider;
 
   public constructor(definitions: T) {