diff --git a/pom.xml b/pom.xml
index 3a9293cd1..ff821b135 100644
--- a/pom.xml
+++ b/pom.xml
@@ -46,7 +46,7 @@
             <dependency>
                 <groupId>net.openhft</groupId>
                 <artifactId>lang</artifactId>
-                <version>6.4.18</version>
+                <version>6.4.17</version>
             </dependency>
 
             <dependency>