MAILBOX-266 Update to guava 18.0
diff --git a/james-utils/pom.xml b/james-utils/pom.xml
index e5e90a0..9fc7bb6 100644
--- a/james-utils/pom.xml
+++ b/james-utils/pom.xml
@@ -48,7 +48,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>16.0</version>
+            <version>18.0</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>