diff --git a/tests/build.gradle b/tests/build.gradle
index bb7b741..6fa5a66 100644
--- a/tests/build.gradle
+++ b/tests/build.gradle
@@ -48,6 +48,7 @@
     compile 'junit:junit:4.11'
     compile 'com.jayway.restassured:rest-assured:2.6.0'
     compile 'org.scalatest:scalatest_2.11:3.0.1'
+    compile 'com.typesafe.akka:akka-testkit_2.11:2.5.4'
     compile 'com.google.code.gson:gson:2.3.1'
     compile 'org.scalamock:scalamock-scalatest-support_2.11:3.4.2'
     compile 'com.typesafe.akka:akka-testkit_2.11:2.4.16'