diff --git a/src/main/resources/application-prod.yml b/src/main/resources/application-prod.yml
index 92654f0..2b779a5 100644
--- a/src/main/resources/application-prod.yml
+++ b/src/main/resources/application-prod.yml
@@ -28,7 +28,7 @@ spring:
           kakao:
             client-id: ${KAKAO_CLIENT_ID}
             client-secret: ${KAKAO_CLIENT_SECRET}
-            client-authentication-method: post
+            client-authentication-method: client_secret_post
             scope: profile_nickname, profile_image, account_email
             client-name: Kakao
             authorization-grant-type: authorization_code