diff --git a/lib/playback/context.ts b/lib/playback/context.ts
index a8b96ae..a6ef0a9 100644
--- a/lib/playback/context.ts
+++ b/lib/playback/context.ts
@@ -16,7 +16,7 @@ export class Context {
 
 	private async load(config: Message.ConfigAudio): Promise<AudioWorkletNode> {
 		// Load the worklet source code.
-		const url = new URL("./worklet/index", import.meta.url)
+		const url = new URL("./worklet/index.ts", import.meta.url)
 		await this.context.audioWorklet.addModule(url)
 
 		const volume = this.context.createGain()
diff --git a/lib/playback/port.ts b/lib/playback/port.ts
index e70eb78..46a2c64 100644
--- a/lib/playback/port.ts
+++ b/lib/playback/port.ts
@@ -10,7 +10,7 @@ export class Port {
 	#callback: Callback
 
 	constructor(callback: Callback) {
-		const url = new URL("worker/index", import.meta.url)
+		const url = new URL("worker/index.ts", import.meta.url)
 
 		this.#callback = callback