diff --git a/decls/i18n.js b/decls/i18n.js
index e8be3b0b1..f5f04d47f 100644
--- a/decls/i18n.js
+++ b/decls/i18n.js
@@ -77,6 +77,7 @@ declare type I18nOptions = {
   pluralizationRules?: PluralizationRules,
   preserveDirectiveContent?: boolean,
   warnHtmlInMessage?: WarnHtmlInMessageLevel,
+  sharedMessages?: LocaleMessage,
 };
 
 declare type IntlAvailability = {
diff --git a/types/index.d.ts b/types/index.d.ts
index 07438a427..fe34985e7 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -106,6 +106,7 @@ declare namespace VueI18n {
     preserveDirectiveContent?: boolean;
     pluralizationRules?: PluralizationRulesMap;
     warnHtmlInMessage?: WarnHtmlInMessageLevel;
+    sharedMessages?: LocaleMessages;
   }
 }
 
@@ -218,6 +219,7 @@ declare module 'vue/types/options' {
       messages?: VueI18n.LocaleMessages;
       dateTimeFormats?: VueI18n.DateTimeFormats;
       numberFormats?: VueI18n.NumberFormats;
+      sharedMessages?: VueI18n.LocaleMessages;
     };
   }
 }
diff --git a/types/test/component.ts b/types/test/component.ts
index 23d152727..4d3a0d94f 100644
--- a/types/test/component.ts
+++ b/types/test/component.ts
@@ -31,6 +31,10 @@ const Component1 = {
     messages: {
       en: { message: { hello: 'hello component1' } },
       ja: { message: { hello: 'こんにちは、component1' } }
+    },
+    sharedMessages: {
+      en: { buttons: { save: 'Save'} },
+      ja: { buttons: { save: 'Save'} }
     }
   }
 }