diff --git a/src/main/java/meltingpot/server/domain/entity/chat/SocketSession.java b/src/main/java/meltingpot/server/domain/entity/chat/SocketSession.java
index 571d038..fd60a2a 100644
--- a/src/main/java/meltingpot/server/domain/entity/chat/SocketSession.java
+++ b/src/main/java/meltingpot/server/domain/entity/chat/SocketSession.java
@@ -13,7 +13,7 @@
 public class SocketSession {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private String id;
+    private Long id;
 
     @NotNull
     @Column(name = "session_id")