diff --git a/pom.xml b/pom.xml
index c72fae9..e87cce6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -107,6 +107,12 @@
             <version>2.4.0</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>3.6.2</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>