diff --git a/index.d.ts b/index.d.ts
index ccf0322..33f5b15 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -17,35 +17,35 @@ export function buildHash(text: string, voice: OddcastVoice): string;
 export function buildUrl(text: string, voice: OddcastVoice, hash?: string): string;
 
 export interface AllOddcastLanguages {
-  ar: OddcastVoice;
-  eu: OddcastVoice;
-  ca: OddcastVoice;
-  zh: OddcastVoice;
-  cs: OddcastVoice;
-  da: OddcastVoice;
-  nl: OddcastVoice;
-  en: OddcastVoice;
-  eo: OddcastVoice;
-  fi: OddcastVoice;
-  fr: OddcastVoice;
-  gl: OddcastVoice;
-  de: OddcastVoice;
-  el: OddcastVoice;
-  hi: OddcastVoice;
-  hu: OddcastVoice;
-  id: OddcastVoice;
-  it: OddcastVoice;
-  ja: OddcastVoice;
-  ko: OddcastVoice;
-  no: OddcastVoice;
-  pl: OddcastVoice;
-  pt: OddcastVoice;
-  ro: OddcastVoice;
-  ru: OddcastVoice;
-  es: OddcastVoice;
-  sv: OddcastVoice;
-  th: OddcastVoice;
-  tr: OddcastVoice;
+  ar: OddcastLanguage;
+  eu: OddcastLanguage;
+  ca: OddcastLanguage;
+  zh: OddcastLanguage;
+  cs: OddcastLanguage;
+  da: OddcastLanguage;
+  nl: OddcastLanguage;
+  en: OddcastLanguage;
+  eo: OddcastLanguage;
+  fi: OddcastLanguage;
+  fr: OddcastLanguage;
+  gl: OddcastLanguage;
+  de: OddcastLanguage;
+  el: OddcastLanguage;
+  hi: OddcastLanguage;
+  hu: OddcastLanguage;
+  id: OddcastLanguage;
+  it: OddcastLanguage;
+  ja: OddcastLanguage;
+  ko: OddcastLanguage;
+  no: OddcastLanguage;
+  pl: OddcastLanguage;
+  pt: OddcastLanguage;
+  ro: OddcastLanguage;
+  ru: OddcastLanguage;
+  es: OddcastLanguage;
+  sv: OddcastLanguage;
+  th: OddcastLanguage;
+  tr: OddcastLanguage;
 }
 
 export interface AllOddcastVoices {