diff --git a/roles/xmpp_server/molecule/default/prepare.yml b/roles/xmpp_server/molecule/default/prepare.yml
index eeda79bca588c374baf13cf6260375a16f6f6c63..4ac6b06cf5da8e9a75f84063618d2be551305dc5 100644
--- a/roles/xmpp_server/molecule/default/prepare.yml
+++ b/roles/xmpp_server/molecule/default/prepare.yml
@@ -95,11 +95,11 @@
         mode: 0644
         state: present
       with_dict:
-        192.168.56.10: "ldap-server backup-server"
-        192.168.56.20: "client-buster"
-        192.168.56.30: "parameters-mandatory domain1 proxy.domain1 conference.domain1"
-        192.168.56.31: "parameters-optional domain2 proxy.domain2 conference.domain2 domain3 proxy.domain3 conference.domain3"
-        192.168.56.32: "deprecated domain4 proxy.domain4 conference.domain4"
+        192.168.56.11: "ldap-server backup-server"
+        192.168.56.21: "client-buster"
+        192.168.56.31: "parameters-mandatory domain1 proxy.domain1 conference.domain1"
+        192.168.56.32: "parameters-optional domain2 proxy.domain2 conference.domain2 domain3 proxy.domain3 conference.domain3"
+        192.168.56.33: "deprecated domain4 proxy.domain4 conference.domain4"
 
     - name: Enable TLSv1.0+ in global OpenSSL configuration file in order to be able to test the xmpp_server_tls_protocol parameter
       lineinfile: