diff --git a/CHANGELOG.md b/CHANGELOG.md
index cee8646..8d70c9d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 4.0.1 - 2024-10-01
+
+- WorkerMessageDef: Rename answer to expectedAnswer
+
 ## 4.0.0 - 2024-10-01
 
 - ComChannelEndpoint has been extracted from WorkerTask
diff --git a/package-lock.json b/package-lock.json
index acfd038..1d40b0f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7776,8 +7776,8 @@
       "dependencies": {
         "lil-gui": "~0.19.2",
         "three": "~0.169.0",
-        "wtd-core": "~4.0.0",
-        "wtd-three-ext": "~4.0.0",
+        "wtd-core": "~4.0.1",
+        "wtd-three-ext": "~4.0.1",
         "wwobjloader2": "6.2.1"
       },
       "devDependencies": {
@@ -7786,15 +7786,15 @@
       }
     },
     "packages/wtd-core": {
-      "version": "4.0.0",
+      "version": "4.0.1",
       "license": "MIT"
     },
     "packages/wtd-three-ext": {
-      "version": "4.0.0",
+      "version": "4.0.1",
       "license": "MIT",
       "dependencies": {
         "three": "~0.169.0",
-        "wtd-core": "~4.0.0"
+        "wtd-core": "~4.0.1"
       },
       "devDependencies": {
         "@types/three": "~0.169.0"
diff --git a/packages/examples/package.json b/packages/examples/package.json
index 7d2d2ec..f325aa0 100644
--- a/packages/examples/package.json
+++ b/packages/examples/package.json
@@ -19,8 +19,8 @@
   "dependencies": {
     "lil-gui": "~0.19.2",
     "three": "~0.169.0",
-    "wtd-core": "~4.0.0",
-    "wtd-three-ext": "~4.0.0",
+    "wtd-core": "~4.0.1",
+    "wtd-three-ext": "~4.0.1",
     "wwobjloader2": "6.2.1"
   },
   "devDependencies": {
diff --git a/packages/examples/src/helloWorld/HelloWorldComChannelEndpoint.ts b/packages/examples/src/helloWorld/HelloWorldComChannelEndpoint.ts
index e74e0ca..311f1eb 100644
--- a/packages/examples/src/helloWorld/HelloWorldComChannelEndpoint.ts
+++ b/packages/examples/src/helloWorld/HelloWorldComChannelEndpoint.ts
@@ -27,7 +27,7 @@ class HelloWorldComChannelEndpointExample {
                     cmd: 'hello_world'
                 }),
                 awaitAnswer: true,
-                answer: 'hello_world_confirm'
+                expectedAnswer: 'hello_world_confirm'
             },);
 
             const rawPayload = result.payloads[0] as RawPayload;
diff --git a/packages/wtd-core/package.json b/packages/wtd-core/package.json
index d062f3b..5386fc7 100644
--- a/packages/wtd-core/package.json
+++ b/packages/wtd-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "wtd-core",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "license": "MIT",
   "type": "module",
   "main": "./dist/index.js",
diff --git a/packages/wtd-core/src/ComChannelEndpoint.ts b/packages/wtd-core/src/ComChannelEndpoint.ts
index 024ba85..2e757a3 100644
--- a/packages/wtd-core/src/ComChannelEndpoint.ts
+++ b/packages/wtd-core/src/ComChannelEndpoint.ts
@@ -25,7 +25,7 @@ export interface WorkerMessageDef {
     message: WorkerMessage;
     transferables?: Transferable[];
     copyTransferables?: boolean;
-    answer?: string;
+    expectedAnswer?: string;
     awaitAnswer?: boolean;
 }
 
@@ -123,12 +123,12 @@ export class ComChannelEndpoint {
                 const transferablesToWorker = this.handleTransferables(def);
 
                 if (def.awaitAnswer === true) {
-                    if (def.answer === undefined) {
+                    if (def.expectedAnswer === undefined) {
                         reject(new Error('No answer name provided. Aborting...'));
                         return;
                     }
                     this.updateAwaitHandlers(message, [{
-                        name: def.answer,
+                        name: def.expectedAnswer,
                         resolve: [resolve],
                         reject: reject,
                         remove: true,
diff --git a/packages/wtd-core/src/offscreen/MainEventProxy.ts b/packages/wtd-core/src/offscreen/MainEventProxy.ts
index 32ff1d2..b9aeb09 100644
--- a/packages/wtd-core/src/offscreen/MainEventProxy.ts
+++ b/packages/wtd-core/src/offscreen/MainEventProxy.ts
@@ -165,7 +165,7 @@ export const registerCanvas = async (workerTask: WorkerTask, canvas: HTMLCanvasE
     await workerTask.sentMessage({
         message: WorkerMessage.fromPayload(new OffscreenPayload({}), OffscreenWorkerCommandRequest.PROXY_START),
         awaitAnswer: true,
-        answer: OffscreenWorkerCommandResponse.PROXY_START_COMPLETE
+        expectedAnswer: OffscreenWorkerCommandResponse.PROXY_START_COMPLETE
     });
 
     for (const [eventName, instruction] of handlingInstructions.entries()) {
diff --git a/packages/wtd-core/src/offscreen/helper.ts b/packages/wtd-core/src/offscreen/helper.ts
index 34462c5..9a1caa4 100644
--- a/packages/wtd-core/src/offscreen/helper.ts
+++ b/packages/wtd-core/src/offscreen/helper.ts
@@ -19,7 +19,7 @@ export const initOffscreenCanvas = async (workerTask: WorkerTask, canvas: HTMLCa
         message: WorkerMessage.fromPayload(offscreenPayloadRenderer, OffscreenWorkerCommandRequest.INIT_OFFSCREEN_CANVAS),
         transferables: [offscreenCanvas],
         awaitAnswer: true,
-        answer: OffscreenWorkerCommandResponse.INIT_OFFSCREEN_CANVAS_COMPLETE
+        expectedAnswer: OffscreenWorkerCommandResponse.INIT_OFFSCREEN_CANVAS_COMPLETE
     });
 };
 
diff --git a/packages/wtd-core/src/utilities.ts b/packages/wtd-core/src/utilities.ts
index 890bbd0..0f9d222 100644
--- a/packages/wtd-core/src/utilities.ts
+++ b/packages/wtd-core/src/utilities.ts
@@ -55,7 +55,7 @@ export const initChannel = async (workerOne: WorkerTask, workerTwo: WorkerTask)
         message: WorkerMessage.fromPayload(payloadOne, WorkerTaskCommandRequest.INIT_CHANNEL),
         transferables: [channel.port1],
         awaitAnswer: true,
-        answer: WorkerTaskCommandResponse.INIT_CHANNEL_COMPLETE
+        expectedAnswer: WorkerTaskCommandResponse.INIT_CHANNEL_COMPLETE
     }));
 
     const payloadTwo = new RawPayload({
@@ -65,7 +65,7 @@ export const initChannel = async (workerOne: WorkerTask, workerTwo: WorkerTask)
         message: WorkerMessage.fromPayload(payloadTwo, WorkerTaskCommandRequest.INIT_CHANNEL),
         transferables: [channel.port2],
         awaitAnswer: true,
-        answer: WorkerTaskCommandResponse.INIT_CHANNEL_COMPLETE
+        expectedAnswer: WorkerTaskCommandResponse.INIT_CHANNEL_COMPLETE
     }));
     return Promise.all(promises);
 };
diff --git a/packages/wtd-three-ext/package.json b/packages/wtd-three-ext/package.json
index 2c16d37..29f8910 100644
--- a/packages/wtd-three-ext/package.json
+++ b/packages/wtd-three-ext/package.json
@@ -1,6 +1,6 @@
 {
   "name": "wtd-three-ext",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "license": "MIT",
   "type": "module",
   "main": "./dist/index.js",
@@ -45,7 +45,7 @@
     "npm": "10.8.3"
   },
   "dependencies": {
-    "wtd-core": "~4.0.0",
+    "wtd-core": "~4.0.1",
     "three": "~0.169.0"
   },
   "devDependencies": {