diff --git a/pom.xml b/pom.xml
index 2d6fde82c..eda9551ba 100644
--- a/pom.xml
+++ b/pom.xml
@@ -48,7 +48,7 @@
             <dependency>
                 <groupId>net.openhft</groupId>
                 <artifactId>lang</artifactId>
-                <version>6.6-SNAPSHOT</version>
+                <version>6.5.1-SNAPSHOT</version>
             </dependency>
 
             <dependency>