diff --git a/backend/src/main/java/org/raddatz/familienarchiv/controller/PersonController.java b/backend/src/main/java/org/raddatz/familienarchiv/controller/PersonController.java
index ceb22f63..e189d771 100644
--- a/backend/src/main/java/org/raddatz/familienarchiv/controller/PersonController.java
+++ b/backend/src/main/java/org/raddatz/familienarchiv/controller/PersonController.java
@@ -4,6 +4,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 
+import org.raddatz.familienarchiv.dto.PersonUpdateDTO;
 import org.raddatz.familienarchiv.model.Document;
 import org.raddatz.familienarchiv.model.Person;
 import org.raddatz.familienarchiv.service.DocumentService;
@@ -54,17 +55,14 @@ public class PersonController {
     }
 
     @PutMapping("/{id}")
-    public ResponseEntity<Person> updatePerson(@PathVariable UUID id, @RequestBody Map<String, String> body) {
-        String firstName = body.get("firstName");
-        String lastName = body.get("lastName");
-        if (firstName == null || firstName.isBlank() || lastName == null || lastName.isBlank()) {
+    public ResponseEntity<Person> updatePerson(@PathVariable UUID id, @RequestBody PersonUpdateDTO dto) {
+        if (dto.getFirstName() == null || dto.getFirstName().isBlank()
+                || dto.getLastName() == null || dto.getLastName().isBlank()) {
             throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Vor- und Nachname sind Pflichtfelder");
         }
-        Integer birthYear = body.get("birthYear") != null && !body.get("birthYear").isBlank()
-                ? Integer.parseInt(body.get("birthYear")) : null;
-        Integer deathYear = body.get("deathYear") != null && !body.get("deathYear").isBlank()
-                ? Integer.parseInt(body.get("deathYear")) : null;
-        return ResponseEntity.ok(personService.updatePerson(id, firstName.trim(), lastName.trim(), body.get("alias"), body.get("notes"), birthYear, deathYear));
+        dto.setFirstName(dto.getFirstName().trim());
+        dto.setLastName(dto.getLastName().trim());
+        return ResponseEntity.ok(personService.updatePerson(id, dto));
     }
 
     @PostMapping("/{id}/merge")
diff --git a/backend/src/main/java/org/raddatz/familienarchiv/dto/PersonUpdateDTO.java b/backend/src/main/java/org/raddatz/familienarchiv/dto/PersonUpdateDTO.java
new file mode 100644
index 00000000..88d808c0
--- /dev/null
+++ b/backend/src/main/java/org/raddatz/familienarchiv/dto/PersonUpdateDTO.java
@@ -0,0 +1,13 @@
+package org.raddatz.familienarchiv.dto;
+
+import lombok.Data;
+
+@Data
+public class PersonUpdateDTO {
+    private String firstName;
+    private String lastName;
+    private String alias;
+    private String notes;
+    private Integer birthYear;
+    private Integer deathYear;
+}
diff --git a/backend/src/main/java/org/raddatz/familienarchiv/service/PersonService.java b/backend/src/main/java/org/raddatz/familienarchiv/service/PersonService.java
index ae555086..02a872ff 100644
--- a/backend/src/main/java/org/raddatz/familienarchiv/service/PersonService.java
+++ b/backend/src/main/java/org/raddatz/familienarchiv/service/PersonService.java
@@ -3,6 +3,7 @@ package org.raddatz.familienarchiv.service;
 import java.util.List;
 import java.util.UUID;
 
+import org.raddatz.familienarchiv.dto.PersonUpdateDTO;
 import org.raddatz.familienarchiv.model.Person;
 import org.raddatz.familienarchiv.repository.PersonRepository;
 import org.springframework.http.HttpStatus;
@@ -58,18 +59,18 @@ public class PersonService {
     }
 
     @Transactional
-    public Person updatePerson(UUID id, String firstName, String lastName, String alias, String notes, Integer birthYear, Integer deathYear) {
-        if (birthYear != null && deathYear != null && birthYear > deathYear) {
+    public Person updatePerson(UUID id, PersonUpdateDTO dto) {
+        if (dto.getBirthYear() != null && dto.getDeathYear() != null && dto.getBirthYear() > dto.getDeathYear()) {
             throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Geburtsjahr darf nicht nach dem Todesjahr liegen");
         }
         Person person = personRepository.findById(id)
                 .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Person nicht gefunden"));
-        person.setFirstName(firstName);
-        person.setLastName(lastName);
-        person.setAlias(alias == null || alias.isBlank() ? null : alias.trim());
-        person.setNotes(notes == null || notes.isBlank() ? null : notes.trim());
-        person.setBirthYear(birthYear);
-        person.setDeathYear(deathYear);
+        person.setFirstName(dto.getFirstName());
+        person.setLastName(dto.getLastName());
+        person.setAlias(dto.getAlias() == null || dto.getAlias().isBlank() ? null : dto.getAlias().trim());
+        person.setNotes(dto.getNotes() == null || dto.getNotes().isBlank() ? null : dto.getNotes().trim());
+        person.setBirthYear(dto.getBirthYear());
+        person.setDeathYear(dto.getDeathYear());
         return personRepository.save(person);
     }
 
diff --git a/backend/src/test/java/org/raddatz/familienarchiv/service/PersonServiceTest.java b/backend/src/test/java/org/raddatz/familienarchiv/service/PersonServiceTest.java
index 654df2ef..df569543 100644
--- a/backend/src/test/java/org/raddatz/familienarchiv/service/PersonServiceTest.java
+++ b/backend/src/test/java/org/raddatz/familienarchiv/service/PersonServiceTest.java
@@ -5,6 +5,7 @@ import org.junit.jupiter.api.extension.ExtendWith;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
+import org.raddatz.familienarchiv.dto.PersonUpdateDTO;
 import org.raddatz.familienarchiv.model.Person;
 import org.raddatz.familienarchiv.repository.PersonRepository;
 import org.springframework.web.server.ResponseStatusException;
@@ -92,7 +93,9 @@ class PersonServiceTest {
         when(personRepository.findById(id)).thenReturn(Optional.of(person));
         when(personRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
 
-        Person result = personService.updatePerson(id, "Anna", "Alt", null, "Some notes here.", null, null);
+        PersonUpdateDTO dto = new PersonUpdateDTO();
+        dto.setFirstName("Anna"); dto.setLastName("Alt"); dto.setNotes("Some notes here.");
+        Person result = personService.updatePerson(id, dto);
 
         assertThat(result.getNotes()).isEqualTo("Some notes here.");
     }
@@ -104,7 +107,9 @@ class PersonServiceTest {
         when(personRepository.findById(id)).thenReturn(Optional.of(person));
         when(personRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
 
-        Person result = personService.updatePerson(id, "Anna", "Alt", null, "   ", null, null);
+        PersonUpdateDTO dto = new PersonUpdateDTO();
+        dto.setFirstName("Anna"); dto.setLastName("Alt"); dto.setNotes("   ");
+        Person result = personService.updatePerson(id, dto);
 
         assertThat(result.getNotes()).isNull();
     }
@@ -118,7 +123,9 @@ class PersonServiceTest {
         when(personRepository.findById(id)).thenReturn(Optional.of(person));
         when(personRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
 
-        Person result = personService.updatePerson(id, "Anna", "Alt", null, null, 1890, 1965);
+        PersonUpdateDTO dto = new PersonUpdateDTO();
+        dto.setFirstName("Anna"); dto.setLastName("Alt"); dto.setBirthYear(1890); dto.setDeathYear(1965);
+        Person result = personService.updatePerson(id, dto);
 
         assertThat(result.getBirthYear()).isEqualTo(1890);
         assertThat(result.getDeathYear()).isEqualTo(1965);
@@ -128,7 +135,9 @@ class PersonServiceTest {
     void updatePerson_throwsBadRequest_whenBirthYearAfterDeathYear() {
         UUID id = UUID.randomUUID();
 
-        assertThatThrownBy(() -> personService.updatePerson(id, "Anna", "Alt", null, null, 1970, 1950))
+        PersonUpdateDTO dto = new PersonUpdateDTO();
+        dto.setFirstName("Anna"); dto.setLastName("Alt"); dto.setBirthYear(1970); dto.setDeathYear(1950);
+        assertThatThrownBy(() -> personService.updatePerson(id, dto))
                 .isInstanceOf(ResponseStatusException.class)
                 .extracting(e -> ((ResponseStatusException) e).getStatusCode().value())
                 .isEqualTo(400);
@@ -141,7 +150,9 @@ class PersonServiceTest {
         when(personRepository.findById(id)).thenReturn(Optional.of(person));
         when(personRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
 
-        Person result = personService.updatePerson(id, "Anna", "Alt", null, null, 1900, 1900);
+        PersonUpdateDTO dto = new PersonUpdateDTO();
+        dto.setFirstName("Anna"); dto.setLastName("Alt"); dto.setBirthYear(1900); dto.setDeathYear(1900);
+        Person result = personService.updatePerson(id, dto);
 
         assertThat(result.getBirthYear()).isEqualTo(1900);
         assertThat(result.getDeathYear()).isEqualTo(1900);