diff --git a/examples/authelia/swarm.yml b/examples/authelia/swarm.yml
index 6a5382453..68eb42a48 100644
--- a/examples/authelia/swarm.yml
+++ b/examples/authelia/swarm.yml
@@ -1,4 +1,4 @@
-version: '3'
+version: '3.3'
 
 services: