diff --git a/src/main/resources/application-dev.properties b/src/main/resources/application-dev.properties
index 6388acc..f5ef64f 100644
--- a/src/main/resources/application-dev.properties
+++ b/src/main/resources/application-dev.properties
@@ -6,6 +6,9 @@ spring.datasource.url=${DB_URL}
 spring.datasource.username=${DB_USERNAME}
 spring.datasource.password=${DB_PASSWORD}
 spring.jpa.hibernate.ddl-auto=update
+# === ??? ?? (KST ??) ===
+spring.jpa.properties.hibernate.jdbc.time_zone=Asia/Seoul
+spring.jackson.time-zone=Asia/Seoul
 # Cors
 cors.allowed-origins=\
   http://localhost:3000,\
diff --git a/src/main/resources/application-prod.properties b/src/main/resources/application-prod.properties
index bdbe043..bf6cbff 100644
--- a/src/main/resources/application-prod.properties
+++ b/src/main/resources/application-prod.properties
@@ -8,6 +8,9 @@ spring.datasource.url=${SPRING_DATASOURCE_URL}
 spring.datasource.username=${SPRING_DATASOURCE_USERNAME}
 spring.datasource.password=${SPRING_DATASOURCE_PASSWORD}
 spring.jpa.hibernate.ddl-auto=update
+# === ??? ?? (KST ??) ===
+spring.jpa.properties.hibernate.jdbc.time_zone=Asia/Seoul
+spring.jackson.time-zone=Asia/Seoul
 # JWT
 spring.jwt.secret=${JWT_SECRET}
 spring.jwt.access-token-expire-time=3600000