diff --git a/.run/ParticipationServiceApplication.run.xml b/.run/ParticipationServiceApplication.run.xml
index 088393b..a323100 100644
--- a/.run/ParticipationServiceApplication.run.xml
+++ b/.run/ParticipationServiceApplication.run.xml
@@ -14,7 +14,7 @@
           <entry key="DB_PASSWORD" value="Hi5Jessica!" />
 
           <!-- JPA 설정 -->
-          <entry key="DDL_AUTO" value="validate" />
+          <entry key="DDL_AUTO" value="none" />
           <entry key="SHOW_SQL" value="true" />
 
           <!-- Redis 설정 -->
diff --git a/participation-service/src/main/java/com/kt/event/participation/domain/participant/Participant.java b/participation-service/src/main/java/com/kt/event/participation/domain/participant/Participant.java
index 4d08673..0aac1f8 100644
--- a/participation-service/src/main/java/com/kt/event/participation/domain/participant/Participant.java
+++ b/participation-service/src/main/java/com/kt/event/participation/domain/participant/Participant.java
@@ -66,8 +66,9 @@ public class Participant extends BaseTimeEntity {
     /**
      * 참여 채널
      * 기본값: SNS
+     * TODO: 기존 데이터 마이그레이션 후 nullable = false로 변경
      */
-    @Column(name = "channel", length = 20, nullable = false)
+    @Column(name = "channel", length = 20, nullable = true)
     private String channel;
 
     /**