diff --git a/core.d.ts b/core.d.ts
index 1768cc04..e82b1f70 100644
--- a/core.d.ts
+++ b/core.d.ts
@@ -213,9 +213,9 @@ export type MimeType =
 	| 'video/3gpp'
 	| 'audio/mpeg'
 	| 'audio/mp4' // RFC 4337
-	| 'audio/opus'
 	| 'video/ogg'
 	| 'audio/ogg'
+	| 'audio/ogg; codecs=opus'
 	| 'application/ogg'
 	| 'audio/x-flac'
 	| 'audio/ape'
diff --git a/core.js b/core.js
index fdaa4d00..ad02b1c7 100644
--- a/core.js
+++ b/core.js
@@ -529,7 +529,7 @@ export class FileTypeParser {
 			if (_check(type, [0x4F, 0x70, 0x75, 0x73, 0x48, 0x65, 0x61, 0x64])) {
 				return {
 					ext: 'opus',
-					mime: 'audio/opus',
+					mime: 'audio/ogg; codecs=opus',
 				};
 			}
 
diff --git a/supported.js b/supported.js
index b64f5b59..57857f7e 100644
--- a/supported.js
+++ b/supported.js
@@ -200,9 +200,9 @@ export const mimeTypes = [
 	'video/3gpp',
 	'audio/mpeg',
 	'audio/mp4', // RFC 4337
-	'audio/opus',
 	'video/ogg',
 	'audio/ogg',
+	'audio/ogg; codecs=opus',
 	'application/ogg',
 	'audio/x-flac',
 	'audio/ape',