diff --git a/puppet/zulip/templates/nginx.conf.template.erb b/puppet/zulip/templates/nginx.conf.template.erb
index 79cfa96c96..98d07b4b58 100644
--- a/puppet/zulip/templates/nginx.conf.template.erb
+++ b/puppet/zulip/templates/nginx.conf.template.erb
@@ -34,6 +34,7 @@ http {
 
     gzip on;
     gzip_proxied any;
+    gzip_comp_level 3;
     gzip_types
       application/javascript
       application/json