diff --git a/roles/reverse-proxy/templates/reverse-proxy.conf b/roles/reverse-proxy/templates/reverse-proxy.conf
index e2e3068..c2e4ab0 100644
--- a/roles/reverse-proxy/templates/reverse-proxy.conf
+++ b/roles/reverse-proxy/templates/reverse-proxy.conf
@@ -101,6 +101,13 @@ server {
 	location / {
 		proxy_pass http://localhost:{{ ports['hedgedoc'] }};
 	}
+
+	location /socket.io/ {
+		proxy_pass http://localhost:{{ ports['hedgedoc'] }};
+
+		proxy_set_header Upgrade $http_upgrade;
+		proxy_set_header Connection $http_connection;
+	}
 }