diff --git a/types/i18next/index.d.ts b/types/i18next/index.d.ts
index 61b59b32e1..7674762de6 100644
--- a/types/i18next/index.d.ts
+++ b/types/i18next/index.d.ts
@@ -493,7 +493,7 @@ declare namespace i18next {
         /**
          * Returns rtl or ltr depending on languages read direction.
          */
-        dir(lng?: string): void;
+        dir(lng?: string): "ltr" | "rtl";
 
         /**
          * Exposes interpolation.format function added on init.
diff --git a/types/i18next/v2/index.d.ts b/types/i18next/v2/index.d.ts
index f9bd900e77..b67a5f9423 100644
--- a/types/i18next/v2/index.d.ts
+++ b/types/i18next/v2/index.d.ts
@@ -128,7 +128,7 @@ declare namespace i18n {
 
         loadLanguages(lngs: string[], callback?: () => void): void;
 
-        dir(lng?: string): string;
+        dir(lng?: string): "ltr" | "rtl";
 
         createInstance(options?: Options, callback?: (err: any, t: TranslationFunction) => void): I18n;