diff --git a/lib/mydb.php b/lib/mydb.php
index 63a062eb..89f0f8e3 100644
--- a/lib/mydb.php
+++ b/lib/mydb.php
@@ -21,12 +21,14 @@ function db_connect(){  //DB연결을 함수로 정의
   $db_user = $_ENV['DB_USER'] ?? 'chandj';
   $db_pass = $_ENV['DB_PASS'] ?? '';
 
-  $dsn = "mysql:host=".$db_host.";dbname=".$db_name.";charset=utf8";
+  $dsn = "mysql:host=".$db_host.";dbname=".$db_name.";charset=utf8mb4";
 
   try {
-    $pdo = new PDO($dsn,$db_user,$db_pass);
-    $pdo->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
-    $pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES,FALSE);
+    $pdo = new PDO($dsn, $db_user, $db_pass, [
+      PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+      PDO::ATTR_EMULATE_PREPARES => false,
+      PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8mb4"
+    ]);
   } catch (PDOException $Exception) {
     die('오류:'.$Exception->getMessage());
   }