diff --git a/ksonnet/service/ambassador.libsonnet b/ksonnet/service/ambassador.libsonnet
index 9d00089..c43d062 100644
--- a/ksonnet/service/ambassador.libsonnet
+++ b/ksonnet/service/ambassador.libsonnet
@@ -13,7 +13,7 @@
       kind: "Service",
       metadata: {
         annotations: {
-            "getambassador.io/config": "---\napiVersion: ambassador/v0\nkind: Module\nname: tls\nconfig:\n  server:\n    enabled: True\n    secret: dkube-certificate-secret\n"
+            "getambassador.io/config": "---\napiVersion: ambassador/v0\nkind: Module\nname: tls\nconfig:\n  server:\n    enabled: True\n    secret: dkube-certificate-secret\n    alpn_protocols: h2\n"
         },
         labels: {
           service: "ambassador",