diff --git a/ts/00_commitinfo_data.ts b/ts/00_commitinfo_data.ts
index 8594ba3..293587f 100644
--- a/ts/00_commitinfo_data.ts
+++ b/ts/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@pushrocks/smarttime',
-  version: '4.0.0',
+  version: '4.0.1',
   description: 'handle time in smart ways'
 }
diff --git a/ts/smarttime.classes.cronmanager.ts b/ts/smarttime.classes.cronmanager.ts
index aa26857..f022388 100644
--- a/ts/smarttime.classes.cronmanager.ts
+++ b/ts/smarttime.classes.cronmanager.ts
@@ -1,5 +1,5 @@
 import * as plugins from './smarttime.plugins.js';
-import { CronJob } from './smarttime.classes.cronjob.js';
+import { CronJob, TJobFunction } from './smarttime.classes.cronjob.js';
 import { getMilliSecondsAsHumanReadableString } from './smarttime.units.js';
 
 export class CronManager {
@@ -10,7 +10,7 @@ export class CronManager {
 
   constructor() {}
 
-  public addCronjob(cronIdentifierArg: string, cronFunctionArg: () => Promise<void>) {
+  public addCronjob(cronIdentifierArg: string, cronFunctionArg: TJobFunction) {
     const newCronJob = new CronJob(this, cronIdentifierArg, cronFunctionArg);
     this.cronjobs.add(newCronJob);
     if (this.status === 'started') {