diff --git a/spring-boot/src/test/java/com/baeldung/beanvalidation/application/UserControllerIntegrationTest.java b/spring-boot/src/test/java/com/baeldung/beanvalidation/application/UserControllerIntegrationTest.java
index 07d9b0807e..21395c779b 100644
--- a/spring-boot/src/test/java/com/baeldung/beanvalidation/application/UserControllerIntegrationTest.java
+++ b/spring-boot/src/test/java/com/baeldung/beanvalidation/application/UserControllerIntegrationTest.java
@@ -2,9 +2,6 @@ package com.baeldung.beanvalidation.application;
 
 import com.baeldung.beanvalidation.application.controllers.UserController;
 import com.baeldung.beanvalidation.application.repositories.UserRepository;
-
-import java.nio.charset.Charset;
-import static org.assertj.core.api.Assertions.assertThat;
 import org.hamcrest.core.Is;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -18,6 +15,10 @@ import org.springframework.test.web.servlet.MockMvc;
 import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
 import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
 
+import java.nio.charset.Charset;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
 @RunWith(SpringRunner.class)
 @WebMvcTest
 @AutoConfigureMockMvc
@@ -40,9 +41,9 @@ public class UserControllerIntegrationTest {
     @Test
     public void whenGetRequestToUsers_thenCorrectResponse() throws Exception {
         mockMvc.perform(MockMvcRequestBuilders.get("/users")
-                .contentType(MediaType.APPLICATION_JSON_UTF8))
+                .contentType(MediaType.APPLICATION_JSON))
                 .andExpect(MockMvcResultMatchers.status().isOk())
-                .andExpect(MockMvcResultMatchers.content().contentType(MediaType.APPLICATION_JSON_UTF8));
+                .andExpect(MockMvcResultMatchers.content().contentType(MediaType.APPLICATION_JSON));
     
     }
     
@@ -52,7 +53,7 @@ public class UserControllerIntegrationTest {
         String user = "{\"name\": \"bob\", \"email\" : \"bob@domain.com\"}";
         mockMvc.perform(MockMvcRequestBuilders.post("/users")
                 .content(user)
-                .contentType(MediaType.APPLICATION_JSON_UTF8))
+                .contentType(MediaType.APPLICATION_JSON))
                 .andExpect(MockMvcResultMatchers.status().isOk())
                 .andExpect(MockMvcResultMatchers.content().contentType(textPlainUtf8));
     }
@@ -62,9 +63,9 @@ public class UserControllerIntegrationTest {
         String user = "{\"name\": \"\", \"email\" : \"bob@domain.com\"}";
         mockMvc.perform(MockMvcRequestBuilders.post("/users")
                 .content(user)
-                .contentType(MediaType.APPLICATION_JSON_UTF8))
+                .contentType(MediaType.APPLICATION_JSON))
                 .andExpect(MockMvcResultMatchers.status().isBadRequest())
                 .andExpect(MockMvcResultMatchers.jsonPath("$.name", Is.is("Name is mandatory")))
-                .andExpect(MockMvcResultMatchers.content().contentType(MediaType.APPLICATION_JSON_UTF8));
+                .andExpect(MockMvcResultMatchers.content().contentType(MediaType.APPLICATION_JSON));
     }
 }
diff --git a/spring-mvc-basics-3/src/test/java/com/baeldung/SpringBootApplicationIntegrationTest.java b/spring-mvc-basics-3/src/test/java/com/baeldung/SpringBootApplicationIntegrationTest.java
index 7190c4f427..bccca58aea 100644
--- a/spring-mvc-basics-3/src/test/java/com/baeldung/SpringBootApplicationIntegrationTest.java
+++ b/spring-mvc-basics-3/src/test/java/com/baeldung/SpringBootApplicationIntegrationTest.java
@@ -16,8 +16,6 @@ import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
 import org.springframework.test.web.servlet.setup.MockMvcBuilders;
 import org.springframework.web.context.WebApplicationContext;
 
-import java.nio.charset.Charset;
-
 import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.hasSize;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
@@ -39,31 +37,23 @@ public class SpringBootApplicationIntegrationTest {
 
     @Test
     public void givenRequestHasBeenMade_whenMeetsAllOfGivenConditions_thenCorrect() throws Exception {
-        MediaType contentType = new MediaType(MediaType.APPLICATION_JSON.getType(), MediaType.APPLICATION_JSON.getSubtype(), Charset.forName("utf8"));
-
-        mockMvc.perform(MockMvcRequestBuilders.get("/entity/all")).andExpect(MockMvcResultMatchers.status().isOk()).andExpect(MockMvcResultMatchers.content().contentType(contentType)).andExpect(jsonPath("$", hasSize(4)));
+        mockMvc.perform(MockMvcRequestBuilders.get("/entity/all")).andExpect(MockMvcResultMatchers.status().isOk()).andExpect(MockMvcResultMatchers.content().contentType(MediaType.APPLICATION_JSON)).andExpect(jsonPath("$", hasSize(4)));
     }
 
     @Test
     public void givenRequestHasBeenMade_whenMeetsFindByDateOfGivenConditions_thenCorrect() throws Exception {
-        MediaType contentType = new MediaType(MediaType.APPLICATION_JSON.getType(), MediaType.APPLICATION_JSON.getSubtype(), Charset.forName("utf8"));
-
-        mockMvc.perform(MockMvcRequestBuilders.get("/entity/findbydate/{date}", "2011-12-03T10:15:30")).andExpect(MockMvcResultMatchers.status().isOk()).andExpect(MockMvcResultMatchers.content().contentType(contentType))
+        mockMvc.perform(MockMvcRequestBuilders.get("/entity/findbydate/{date}", "2011-12-03T10:15:30")).andExpect(MockMvcResultMatchers.status().isOk()).andExpect(MockMvcResultMatchers.content().contentType(MediaType.APPLICATION_JSON))
                 .andExpect(jsonPath("$.id", equalTo(1)));
     }
 
     @Test
     public void givenRequestHasBeenMade_whenMeetsFindByModeOfGivenConditions_thenCorrect() throws Exception {
-        MediaType contentType = new MediaType(MediaType.APPLICATION_JSON.getType(), MediaType.APPLICATION_JSON.getSubtype(), Charset.forName("utf8"));
-
-        mockMvc.perform(MockMvcRequestBuilders.get("/entity/findbymode/{mode}", Modes.ALPHA.name())).andExpect(MockMvcResultMatchers.status().isOk()).andExpect(MockMvcResultMatchers.content().contentType(contentType)).andExpect(jsonPath("$.id", equalTo(1)));
+        mockMvc.perform(MockMvcRequestBuilders.get("/entity/findbymode/{mode}", Modes.ALPHA.name())).andExpect(MockMvcResultMatchers.status().isOk()).andExpect(MockMvcResultMatchers.content().contentType(MediaType.APPLICATION_JSON)).andExpect(jsonPath("$.id", equalTo(1)));
     }
 
     @Test
     public void givenRequestHasBeenMade_whenMeetsFindByVersionOfGivenConditions_thenCorrect() throws Exception {
-        MediaType contentType = new MediaType(MediaType.APPLICATION_JSON.getType(), MediaType.APPLICATION_JSON.getSubtype(), Charset.forName("utf8"));
-
-        mockMvc.perform(MockMvcRequestBuilders.get("/entity/findbyversion").header("Version", "1.0.0")).andExpect(MockMvcResultMatchers.status().isOk()).andExpect(MockMvcResultMatchers.content().contentType(contentType))
+        mockMvc.perform(MockMvcRequestBuilders.get("/entity/findbyversion").header("Version", "1.0.0")).andExpect(MockMvcResultMatchers.status().isOk()).andExpect(MockMvcResultMatchers.content().contentType(MediaType.APPLICATION_JSON))
                 .andExpect(jsonPath("$.id", equalTo(1)));
     }
 }
\ No newline at end of file
diff --git a/spring-mvc-basics/src/test/java/com/baeldung/web/controller/EmployeeControllerContentNegotiationIntegrationTest.java b/spring-mvc-basics/src/test/java/com/baeldung/web/controller/EmployeeControllerContentNegotiationIntegrationTest.java
index 6500955d23..4ccba79f9c 100644
--- a/spring-mvc-basics/src/test/java/com/baeldung/web/controller/EmployeeControllerContentNegotiationIntegrationTest.java
+++ b/spring-mvc-basics/src/test/java/com/baeldung/web/controller/EmployeeControllerContentNegotiationIntegrationTest.java
@@ -1,9 +1,5 @@
 package com.baeldung.web.controller;
 
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.header;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
@@ -12,6 +8,10 @@ import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
 import org.springframework.test.web.servlet.MockMvc;
 
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.header;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
 @SpringBootTest
 @AutoConfigureMockMvc
 public class EmployeeControllerContentNegotiationIntegrationTest {
@@ -23,7 +23,7 @@ public class EmployeeControllerContentNegotiationIntegrationTest {
     public void whenEndpointUsingJsonSuffixCalled_thenJsonResponseObtained() throws Exception {
         this.mockMvc.perform(get("/employee/1.json"))
             .andExpect(status().isOk())
-            .andExpect(header().string(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_UTF8_VALUE));
+            .andExpect(header().string(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE));
     }
 
     @Test
@@ -37,7 +37,7 @@ public class EmployeeControllerContentNegotiationIntegrationTest {
     public void whenEndpointUsingJsonParameterCalled_thenJsonResponseObtained() throws Exception {
         this.mockMvc.perform(get("/employee/1?mediaType=json"))
             .andExpect(status().isOk())
-            .andExpect(header().string(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_UTF8_VALUE));
+            .andExpect(header().string(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE));
     }
 
     @Test
@@ -51,7 +51,7 @@ public class EmployeeControllerContentNegotiationIntegrationTest {
     public void whenEndpointUsingJsonAcceptHeaderCalled_thenJsonResponseObtained() throws Exception {
         this.mockMvc.perform(get("/employee/1").header(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON_VALUE))
             .andExpect(status().isOk())
-            .andExpect(header().string(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_UTF8_VALUE));
+            .andExpect(header().string(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE));
     }
 
     @Test
diff --git a/spring-mvc-basics/src/test/java/com/baeldung/web/controller/SimpleBookControllerIntegrationTest.java b/spring-mvc-basics/src/test/java/com/baeldung/web/controller/SimpleBookControllerIntegrationTest.java
index 87d70c2d29..8071828fa3 100644
--- a/spring-mvc-basics/src/test/java/com/baeldung/web/controller/SimpleBookControllerIntegrationTest.java
+++ b/spring-mvc-basics/src/test/java/com/baeldung/web/controller/SimpleBookControllerIntegrationTest.java
@@ -1,19 +1,17 @@
 package com.baeldung.web.controller;
 
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.springframework.http.MediaType;
 import org.springframework.test.web.servlet.MockMvc;
 import org.springframework.test.web.servlet.setup.MockMvcBuilders;
 
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
 public class SimpleBookControllerIntegrationTest {
 
     private MockMvc mockMvc;
-    private static final String CONTENT_TYPE = "application/json;charset=UTF-8";
 
     @BeforeEach
     public void setup() {
@@ -25,7 +23,7 @@ public class SimpleBookControllerIntegrationTest {
         this.mockMvc
             .perform(get("/books/42"))
             .andExpect(status().isOk())
-            .andExpect(content().contentType(CONTENT_TYPE))
+            .andExpect(content().contentType(MediaType.APPLICATION_JSON_VALUE))
             .andExpect(jsonPath("$.id").value(42));
     }
 
diff --git a/spring-mvc-basics/src/test/java/com/baeldung/web/controller/SimpleBookRestControllerIntegrationTest.java b/spring-mvc-basics/src/test/java/com/baeldung/web/controller/SimpleBookRestControllerIntegrationTest.java
index 294943f2e2..1062280f3b 100644
--- a/spring-mvc-basics/src/test/java/com/baeldung/web/controller/SimpleBookRestControllerIntegrationTest.java
+++ b/spring-mvc-basics/src/test/java/com/baeldung/web/controller/SimpleBookRestControllerIntegrationTest.java
@@ -1,19 +1,17 @@
 package com.baeldung.web.controller;
 
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
-import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
-
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.springframework.http.MediaType;
 import org.springframework.test.web.servlet.MockMvc;
 import org.springframework.test.web.servlet.setup.MockMvcBuilders;
 
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
 public class SimpleBookRestControllerIntegrationTest {
 
     private MockMvc mockMvc;
-    private static final String CONTENT_TYPE = "application/json;charset=UTF-8";
 
     @BeforeEach
     public void setup() {
@@ -25,7 +23,7 @@ public class SimpleBookRestControllerIntegrationTest {
         this.mockMvc
             .perform(get("/books-rest/42"))
             .andExpect(status().isOk())
-            .andExpect(content().contentType(CONTENT_TYPE))
+            .andExpect(content().contentType(MediaType.APPLICATION_JSON_VALUE))
             .andExpect(jsonPath("$.id").value(42));
     }
 
diff --git a/testing-modules/rest-assured/pom.xml b/testing-modules/rest-assured/pom.xml
index 74935bcf6f..1891ef9680 100644
--- a/testing-modules/rest-assured/pom.xml
+++ b/testing-modules/rest-assured/pom.xml
@@ -215,6 +215,8 @@
         <rest-assured-json-schema-validator.version>3.0.1</rest-assured-json-schema-validator.version>
 
         <scribejava.version>2.5.3</scribejava.version>
+
+        <spring-boot.version>2.1.9.RELEASE</spring-boot.version>
     </properties>
 
 </project>