diff --git a/pom.xml b/pom.xml
index 086376f..65035b6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.1.5</version>
+        <version>3.2.0</version>
         <relativePath/>
     </parent>
     <groupId>pl.piomin.samples</groupId>
diff --git a/src/main/java/pl/piomin/samples/spring/jpastreamer/repository/DepartmentRepository.java b/src/main/java/pl/piomin/samples/spring/jpastreamer/repository/DepartmentRepository.java
index a3b8c38..27dbcd8 100644
--- a/src/main/java/pl/piomin/samples/spring/jpastreamer/repository/DepartmentRepository.java
+++ b/src/main/java/pl/piomin/samples/spring/jpastreamer/repository/DepartmentRepository.java
@@ -24,15 +24,14 @@ public List<DepartmentDTO> findAll() {
         return streamer.stream(Department.class)
                 .sorted(Department$.name)
                 .map(DepartmentDTO::new)
-                .collect(Collectors.toList());
+                .toList();
     }
 
     public long getNumberOfEmployees(Integer id) {
         return streamer.stream(Department.class)
                 .filter(Department$.id.equal(id))
                 .map(Department::getEmployees)
-                .mapToLong(Set::size)
-                .sum();
+                .count();
     }
 
     public List<EmployeeDTO> getEmployees(Integer id) {
@@ -41,7 +40,7 @@ public List<EmployeeDTO> getEmployees(Integer id) {
                 .map(Department::getEmployees)
                 .flatMap(Set::stream)
                 .map(EmployeeDTO::new)
-                .collect(Collectors.toList());
+                .toList();
     }
 
 }
diff --git a/src/main/java/pl/piomin/samples/spring/jpastreamer/repository/EmployeeRepository.java b/src/main/java/pl/piomin/samples/spring/jpastreamer/repository/EmployeeRepository.java
index 4f05181..fef9c31 100644
--- a/src/main/java/pl/piomin/samples/spring/jpastreamer/repository/EmployeeRepository.java
+++ b/src/main/java/pl/piomin/samples/spring/jpastreamer/repository/EmployeeRepository.java
@@ -26,7 +26,7 @@ public List<EmployeeDTO> findBySalaryGreaterThan(final int salary) {
                 .filter(Employee$.salary.greaterThan(salary))
                 .sorted(Employee$.salary)
                 .map(EmployeeDTO::new)
-                .collect(Collectors.toList());
+                .toList();
     }
 
     public List<EmployeeDTO> findAllWithPagination(final int offset,
@@ -35,7 +35,7 @@ public List<EmployeeDTO> findAllWithPagination(final int offset,
                 .skip(offset)
                 .limit(limit)
                 .map(EmployeeDTO::new)
-                .collect(Collectors.toList());
+                .toList();
     }
 
     public EmployeeWithDetailsDTO findById(final Integer id) {