diff --git a/src/util/logger.ts b/src/util/logger.ts
index fbab20bd5..fd33c5a56 100644
--- a/src/util/logger.ts
+++ b/src/util/logger.ts
@@ -23,7 +23,7 @@ export enum LogLevel {
   Fatal,
 }
 
-let level = LogLevel.Info;
+let level = LogLevel.Warn;
 
 /**
  * `setLogLevel` sets log level.