diff --git a/pkg/client/caddy.go b/pkg/client/caddy.go
index aebde0aa..616b6dac 100644
--- a/pkg/client/caddy.go
+++ b/pkg/client/caddy.go
@@ -71,6 +71,13 @@ func (cli *Client) NewCaddyDeployment(image, config string, placement api.Placem
 				Protocol:      api.ProtocolTCP,
 				Mode:          api.PortModeHost,
 			},
+			// Needed for HTTP/3 (QUIC)
+			{
+				PublishedPort: 443,
+				ContainerPort: 443,
+				Protocol:      api.ProtocolUDP,
+				Mode:          api.PortModeHost,
+			},
 		},
 		Volumes: []api.VolumeSpec{
 			{