diff --git a/spring-reactive-modules/spring-reactive-3/pom.xml b/spring-reactive-modules/spring-reactive-3/pom.xml
index 15cf80fda1..dc821b111d 100644
--- a/spring-reactive-modules/spring-reactive-3/pom.xml
+++ b/spring-reactive-modules/spring-reactive-3/pom.xml
@@ -10,9 +10,10 @@
     <description>spring sample project about new features</description>
 
     <parent>
-        <groupId>com.baeldung.spring.reactive</groupId>
-        <artifactId>spring-reactive-modules</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-boot-3</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-3</relativePath>
     </parent>
 
     <dependencies>
@@ -74,6 +75,11 @@
             <artifactId>kotlin-stdlib</artifactId>
             <version>${kotlin-stdlib.version}</version>
         </dependency>
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>${commons-io.version}</version>
+        </dependency>
     </dependencies>
 
     <dependencyManagement>
@@ -93,6 +99,7 @@
         <spring-cloud.version>2021.0.4</spring-cloud.version>
         <mockwebserver.version>5.0.0-alpha.12</mockwebserver.version>
         <kotlin-stdlib.version>2.0.0-Beta4</kotlin-stdlib.version>
+        <start-class>com.baeldung.custom.deserialization.Application</start-class>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/spring-reactive-modules/spring-reactive-3/src/main/java/com/baeldung/websocket/WebSocketController.java b/spring-reactive-modules/spring-reactive-3/src/main/java/com/baeldung/websocket/WebSocketController.java
index 0c8f9debc9..22f602df86 100644
--- a/spring-reactive-modules/spring-reactive-3/src/main/java/com/baeldung/websocket/WebSocketController.java
+++ b/spring-reactive-modules/spring-reactive-3/src/main/java/com/baeldung/websocket/WebSocketController.java
@@ -3,8 +3,8 @@ package com.baeldung.websocket;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import javax.websocket.*;
-import javax.websocket.server.ServerEndpoint;
+import jakarta.websocket.*;
+import jakarta.websocket.server.ServerEndpoint;
 import java.io.IOException;
 
 @ServerEndpoint("/event-emitter")
diff --git a/spring-reactive-modules/spring-reactive-3/src/test/java/com/baeldung/databuffer/DataBufferToInputStreamUnitTest.java b/spring-reactive-modules/spring-reactive-3/src/test/java/com/baeldung/databuffer/DataBufferToInputStreamUnitTest.java
index 975a2d8698..b6660e4214 100644
--- a/spring-reactive-modules/spring-reactive-3/src/test/java/com/baeldung/databuffer/DataBufferToInputStreamUnitTest.java
+++ b/spring-reactive-modules/spring-reactive-3/src/test/java/com/baeldung/databuffer/DataBufferToInputStreamUnitTest.java
@@ -1,11 +1,15 @@
 package com.baeldung.databuffer;
 
-import com.baeldung.databuffer.DataBufferToInputStream;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
 
-import io.restassured.internal.util.IOUtils;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.stream.Collectors;
 
+import org.apache.commons.io.IOUtils;
 import org.junit.jupiter.api.Test;
-import org.mockito.Mockito;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.reactive.function.client.ClientResponse;
 import org.springframework.web.reactive.function.client.ExchangeFunction;
@@ -13,17 +17,6 @@ import org.springframework.web.reactive.function.client.WebClient;
 
 import reactor.core.publisher.Mono;
 
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.net.URI;
-import java.util.stream.Collectors;
-
-import static org.junit.jupiter.api.Assertions.assertArrayEquals;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.when;
-
 class DataBufferToInputStreamUnitTest {
     private String getResponseStub() throws IOException {
         InputStream inputStream = null;