diff --git a/oxalis-outbound/pom.xml b/oxalis-outbound/pom.xml
index 9219441ad..b346a0eaa 100644
--- a/oxalis-outbound/pom.xml
+++ b/oxalis-outbound/pom.xml
@@ -57,7 +57,7 @@
         <dependency>
             <groupId>network.oxalis</groupId>
             <artifactId>oxalis-as4</artifactId>
-            <version>6.4.0</version>
+            <version>6.6.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>