diff --git a/pom.xml b/pom.xml
index 65d9421..88b3b5b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -24,6 +24,12 @@
       <version>4.11</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.hamcrest</groupId>
+      <artifactId>hamcrest-junit</artifactId>
+      <version>2.0.0.0</version>
+      <scope>test</scope>
+    </dependency>
     <!-- https://mvnrepository.com/artifact/org.mockito/mockito-core -->
     <dependency>
       <groupId>org.mockito</groupId>