diff --git a/packages/backend-rs/index.d.ts b/packages/backend-rs/index.d.ts
index 4f14e02b6c..a384c22964 100644
--- a/packages/backend-rs/index.d.ts
+++ b/packages/backend-rs/index.d.ts
@@ -1122,6 +1122,7 @@ export interface UserProfile {
   preventAiLearning: boolean
   isIndexable: boolean
   mutedPatterns: Array<string>
+  lang: string | null
 }
 export interface UserPublickey {
   userId: string
diff --git a/packages/backend-rs/src/model/entity/user_profile.rs b/packages/backend-rs/src/model/entity/user_profile.rs
index 644817aa8d..d461b11292 100644
--- a/packages/backend-rs/src/model/entity/user_profile.rs
+++ b/packages/backend-rs/src/model/entity/user_profile.rs
@@ -78,6 +78,7 @@ pub struct Model {
     pub is_indexable: bool,
     #[sea_orm(column_name = "mutedPatterns")]
     pub muted_patterns: Vec<String>,
+    pub lang: Option<String>,
 }
 
 #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]