diff --git a/config.json b/config.json
index f9619f8..1cb75ce 100644
--- a/config.json
+++ b/config.json
@@ -13,7 +13,7 @@
     "writeTimeout": 0,
     "pongTimeout": 60,
     "pingTimeout": 10,
-    "pingPeriod": 10,
+    "pingPeriod": 9,
     "enableCompression": false
   },
   "external": {