diff --git a/conf/nginx.conf b/conf/nginx.conf
index fba1cd7..f07531d 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -21,7 +21,7 @@ if ($args ~ ver=) {
 }
 more_set_headers "Cache-Control: $cacheControl";
 set $styleSrc   "'unsafe-inline' 'self' https://${main_domain}";
-set $connectSrc "'self' blob: https://${main_domain} https://${sandbox_domain} wss://${main_domain}";
+set $connectSrc "'self' https://${main_domain} blob: wss://${api_domain} https://${sandbox_domain}";
 set $fontSrc    "'self' data: https://${main_domain}";
 set $imgSrc     "'self' data: blob: https://${main_domain}";
 set $frameSrc   "'self' https://${sandbox_domain} blob:";