diff --git a/src/personal_info/db/schemas/person.py b/src/personal_info/db/schemas/person.py
index 8d56f0d..84e165e 100644
--- a/src/personal_info/db/schemas/person.py
+++ b/src/personal_info/db/schemas/person.py
@@ -48,12 +48,12 @@ class PersonCreate(PersonBase):
 
 
 class Contact(BaseModel):
-  id: str
+  id: UUID4
   category: str
   value: str
 
 class Address(BaseModel):
-  id: str
+  id: UUID4
   category: str
   region: str
   city: str
@@ -62,7 +62,7 @@ class Address(BaseModel):
   flat: str
 
 class Document(BaseModel):
-  id: str
+  id: UUID4
   category: str
   series: str
   number: str