diff --git a/pom.xml b/pom.xml
index 9ff57f6..82668f9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -32,6 +32,17 @@
             <artifactId>javax.json</artifactId>
             <version>1.0.4</version>
         </dependency>
+        <dependency>
+            <groupId>com.yammer.metrics</groupId>
+            <artifactId>metrics-core</artifactId>
+            <version>2.2.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.collections</groupId>
+            <artifactId>google-collections</artifactId>
+            <version>1.0</version>
+        </dependency>
+
     </dependencies>
     <build>
         <plugins>