diff --git a/types/config.ts b/types/config.ts
index 69afa29..2e7bfda 100644
--- a/types/config.ts
+++ b/types/config.ts
@@ -56,7 +56,7 @@ export type Notification = {
 }
 
 export type Callbacks = {
-  onStatusChange: (
+  onStatusChange?: (
     env: any,
     monitor: any,
     isUp: boolean,
@@ -64,7 +64,7 @@ export type Callbacks = {
     timeNow: number,
     reason: string
   ) => Promise<any>
-  onIncident: (
+  onIncident?: (
     env: any,
     monitor: any,
     timeIncidentStart: number,
diff --git a/worker/src/index.ts b/worker/src/index.ts
index e34b926..f9b4680 100644
--- a/worker/src/index.ts
+++ b/worker/src/index.ts
@@ -179,7 +179,7 @@ const Worker = {
             }
 
             console.log('Calling config onStatusChange callback...')
-            await workerConfig.callbacks?.onStatusChange(
+            await workerConfig.callbacks?.onStatusChange?.(
               env,
               monitor,
               true,
@@ -250,7 +250,7 @@ const Worker = {
 
           if (monitorStatusChanged) {
             console.log('Calling config onStatusChange callback...')
-            await workerConfig.callbacks?.onStatusChange(
+            await workerConfig.callbacks?.onStatusChange?.(
               env,
               monitor,
               false,
@@ -266,7 +266,7 @@ const Worker = {
 
         try {
           console.log('Calling config onIncident callback...')
-          await workerConfig.callbacks?.onIncident(
+          await workerConfig.callbacks?.onIncident?.(
             env,
             monitor,
             currentIncident.start[0],