--- a/roles/nginx/templates/etc/nginx/sites-available/munin	Fri Jun 30 10:09:33 2017 +0800
+++ b/roles/nginx/templates/etc/nginx/sites-available/munin	Fri Jun 30 10:09:57 2017 +0800
@@ -13,8 +13,8 @@
 server {
     server_name munin.{{ hostname }};
 
-    listen 443 ssl spdy;
-    listen [::]:443 ssl spdy;
+    listen 443 ssl http2;
+    listen [::]:443 ssl http2;
 
     ssl_certificate /etc/nginx/easy-rsa/keys/munin.{{ hostname }}.crt;
     ssl_certificate_key /etc/nginx/easy-rsa/keys/munin.{{ hostname }}.key;