diff --git a/src/main/resources/application.yaml b/src/main/resources/application.yaml
index adc3661..6719a04 100644
--- a/src/main/resources/application.yaml
+++ b/src/main/resources/application.yaml
@@ -45,7 +45,7 @@ ext:
       "206": ${GCHAT_WEBHOOK_DRIVER_206:} # D.L
       "171": ${GCHAT_WEBHOOK_DRIVER_171:} # M.K
       "243": ${GCHAT_WEBHOOK_DRIVER_243:} # S.L
-      "240": ${GCHAT_WEBHOOK_DRIVER_206:} # T.Y
+      "240": ${GCHAT_WEBHOOK_DRIVER_240:} # T.Y
   samsara:
     base-url: https://api.samsara.com
     api-token: ${SAMSARA_API_TOKEN}   # 반드시 env 로