diff --git a/packages/backend/src/misc/langmap.ts b/packages/backend/src/misc/langmap.ts
index f7e237d30..01bb6c6d9 100644
--- a/packages/backend/src/misc/langmap.ts
+++ b/packages/backend/src/misc/langmap.ts
@@ -376,6 +376,15 @@ export const iso639Langs3 = {
 export const langmapNoRegion = Object.assign({}, iso639Langs1, iso639Langs3);
 
 export const iso639Regional = {
+	'en-GB': {
+		nativeName: 'English (UK)',
+	},
+	'fr-CA': {
+		nativeName: 'Français (Canada)',
+	},
+	'pt-BR': {
+		nativeName: 'Português (Brasil)',
+	},
 	'zh-Hans': {
 		nativeName: '中文（简体）',
 	},
diff --git a/packages/frontend/src/scripts/langmap.ts b/packages/frontend/src/scripts/langmap.ts
index 9415d0293..fe272965d 100644
--- a/packages/frontend/src/scripts/langmap.ts
+++ b/packages/frontend/src/scripts/langmap.ts
@@ -376,6 +376,15 @@ export const iso639Langs3 = {
 export const langmapNoRegion = Object.assign({}, iso639Langs1, iso639Langs3);
 
 export const iso639Regional = {
+	'en-GB': {
+		nativeName: 'English (UK)',
+	},
+	'fr-CA': {
+		nativeName: 'Français (Canada)',
+	},
+	'pt-BR': {
+		nativeName: 'Português (Brasil)',
+	},
 	'zh-Hans': {
 		nativeName: '中文（简体）',
 	},