diff --git a/2.1.x/chapter2-5/pom.xml b/2.1.x/chapter2-5/pom.xml
index 9ffaafe8..6327a6d8 100644
--- a/2.1.x/chapter2-5/pom.xml
+++ b/2.1.x/chapter2-5/pom.xml
@@ -49,6 +49,11 @@
             <version>1.3.3</version>
 			<scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.pegdown</groupId>
+            <artifactId>pegdown</artifactId>
+            <version>1.4.2</version>
+        </dependency>
 	</dependencies>
 
 	<build>
diff --git a/2.1.x/chapter2-5/src/test/java/com/didispace/chapter25/DemoApplicationTests.java b/2.1.x/chapter2-5/src/test/java/com/didispace/chapter25/DemoApplicationTests.java
index d36e438e..d08766cf 100644
--- a/2.1.x/chapter2-5/src/test/java/com/didispace/chapter25/DemoApplicationTests.java
+++ b/2.1.x/chapter2-5/src/test/java/com/didispace/chapter25/DemoApplicationTests.java
@@ -14,7 +14,7 @@
 import java.nio.file.Paths;
 
 @RunWith(SpringRunner.class)
-@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)
+@SpringBootTest()
 public class DemoApplicationTests {
 
     @Test