diff --git a/visualiser/pom.xml b/visualiser/pom.xml
index 8876c318..603cf163 100644
--- a/visualiser/pom.xml
+++ b/visualiser/pom.xml
@@ -57,7 +57,7 @@
         <dependency>
             <groupId>eu.hansolo</groupId>
             <artifactId>Medusa</artifactId>
-            <version>7.9</version>
+            <version>7.7</version>
         </dependency>
 
     </dependencies>