diff --git a/types/joi/index.d.ts b/types/joi/index.d.ts
index 41a8063cac..cc13a9deca 100644
--- a/types/joi/index.d.ts
+++ b/types/joi/index.d.ts
@@ -16,7 +16,7 @@
 
 export type Types = 'any' | 'alternatives' | 'array' | 'boolean' | 'binary' | 'date' | 'function' | 'lazy' | 'number' | 'object' | 'string';
 
-export type LanguageOptions = string | false | null | {
+export type LanguageOptions = string | boolean | null | {
     [key: string]: LanguageOptions;
 };
 
diff --git a/types/joi/v10/index.d.ts b/types/joi/v10/index.d.ts
index 372975ed9e..9270c411aa 100644
--- a/types/joi/v10/index.d.ts
+++ b/types/joi/v10/index.d.ts
@@ -15,7 +15,7 @@
 
 export type Types = 'any' | 'alternatives' | 'array' | 'boolean' | 'binary' | 'date' | 'function' | 'lazy' | 'number' | 'object' | 'string';
 
-export type LanguageOptions = string | false | null | {
+export type LanguageOptions = string | boolean | null | {
     [key: string]: LanguageOptions;
 };