diff --git a/lab2/README.md b/lab2/README.md
index da36500..381e8dd 100644
--- a/lab2/README.md
+++ b/lab2/README.md
@@ -6,46 +6,63 @@
 
 ```mermaid
 classDiagram
+    class Contact {
+        - phone : String?
+        - telegram : String?
+        - email : String?
+        + Contact(phone : String?, telegram : String?, email : String?)
+        + valid_phone_number() : Boolean
+        + valid_telegram() : Boolean
+        + valid_email() : Boolean
+        + present() : Boolean
+        + info() : String
+        - validate_contacts()
+        + new_from_info(info_string : String) : Contact
+    }
+
     class Person {
-        +id: String
-        +git: String
-        -phone: String
-        -telegram: String
-        -email: String
-        +initialize(args: Hash)
-        +set_contacts(phone: String, telegram: String, email: String)
-        +git_present(): Boolean
-        +contact_present(): Boolean
-        +contact_info(): String
-        +valid_phone_number?(phone: String): Boolean
-        +valid_name?(name: String): Boolean
-        +valid_telegram?(telegram: String): Boolean
-        +valid_email?(email: String): Boolean
-        +valid_git?(git: String): Boolean
+        - id : String
+        - git : String
+        - contact : Contact
+        + Person(id : String, git : String, contact : Contact)
+        + git_present() : Boolean
+        + contact_present() : Boolean
+        + contact_info() : String
+        + valid_git(git : String) : Boolean
+        + valid_id(id : String) : Boolean
+        - validate_person()
     }
 
-    class Student {
-        +surname: String
-        +name: String
-        +patronymic: String
-        +initialize(args: Hash)
-        +from_string(student_string: String): Student
-        +read_from_txt(file_path: String): List~Student~
-        +write_to_txt(file_path: String, students: List~Student~)
-        +surname_and_initials(): String
-        +to_s(): String
-        +get_info(): String
+    class StudentRepository {
+        + read_from_txt(file_path : String) : List~Student~
+        + write_to_txt(file_path : String, students : List~Student~)
     }
 
     class StudentShort {
-        +surname_initials: String
-        +contact: String
-        +initialize(student: Student)
-        +from_string(id: String, info_string: String): StudentShort
+        - surname_initials : String
+        - contact : String
+        + StudentShort(id : String, git : String, surname_initials : String, contact : Contact)
+        + from_student(student : Student) : StudentShort
+        + from_string(id : String, info_string : String) : StudentShort
+        + to_s() : String
+    }
+
+    class Student {
+        - surname : String
+        - name : String
+        - patronymic : String
+        + Student(id : String, git : String, contact : Contact, surname : String, name : String, patronymic : String)
+        + from_string(student_string : String) : Student
+        + surname_and_initials() : String
+        + to_s() : String
+        + get_info() : String
+        - validate_student()
     }
 
+    Contact <|-- Person
     Person <|-- Student
     Person <|-- StudentShort
+    Student <.. StudentRepository
 ```
 
 где + - public, - - private