diff --git a/roles/mail_server/molecule.yml b/roles/mail_server/molecule.yml
index 84b66db36fe54dec199f899f2f77eb95c4496131..9e44b9c9e8ec016f2af6181f5b83dd2a6caca04f 100644
--- a/roles/mail_server/molecule.yml
+++ b/roles/mail_server/molecule.yml
@@ -15,7 +15,7 @@ vagrant:
     - name: virtualbox
       type: virtualbox
       options:
-        memory: 512
+        memory: 768
         cpus: 1
 
   instances: