diff --git a/spring-data-riak/pom.xml b/spring-data-riak/pom.xml
index f5f20da54..7936d8731 100644
--- a/spring-data-riak/pom.xml
+++ b/spring-data-riak/pom.xml
@@ -98,6 +98,10 @@
       <groupId>javax.mail</groupId>
       <artifactId>mail</artifactId>
     </dependency>
+    <dependency>
+      <groupId>javax.activation</groupId>
+      <artifactId>activation</artifactId>
+    </dependency>
 
     <dependency>
       <groupId>org.mockito</groupId>