diff --git a/cocalc.conf b/cocalc.conf
index 8da7c02..949e5f7 100644
--- a/cocalc.conf
+++ b/cocalc.conf
@@ -15,5 +15,7 @@ server {
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection $connection_upgrade;
         proxy_set_header Host $host;
+
+        client_max_body_size 1G;
     }
 }