diff --git a/src/main/java/net/teumteum/alert/domain/Alert.java b/src/main/java/net/teumteum/alert/domain/Alert.java
index cf5459e..e8f828e 100644
--- a/src/main/java/net/teumteum/alert/domain/Alert.java
+++ b/src/main/java/net/teumteum/alert/domain/Alert.java
@@ -28,10 +28,10 @@ public class Alert extends TimeBaseEntity {
     @Column(name = "user_id", nullable = false)
     private Long userId;
 
-    @Column(name = "title", nullable = false, length = 20)
+    @Column(name = "title", nullable = false)
     private String title;
 
-    @Column(name = "body", nullable = false, length = 20)
+    @Column(name = "body", nullable = false)
     private String body;
 
     @Column(name = "type")
diff --git a/src/main/resources/db/migration/V15__alter_alert_title_and_body.sql b/src/main/resources/db/migration/V15__alter_alert_title_and_body.sql
new file mode 100644
index 0000000..24d7df9
--- /dev/null
+++ b/src/main/resources/db/migration/V15__alter_alert_title_and_body.sql
@@ -0,0 +1,4 @@
+alter table alert drop column title;
+alter table alert drop column `body`;
+alter table alert add column title text not null;
+alter table alert add column `body` text not null;
diff --git a/src/test/resources/schema.sql b/src/test/resources/schema.sql
index 072cc89..b8087e3 100644
--- a/src/test/resources/schema.sql
+++ b/src/test/resources/schema.sql
@@ -97,8 +97,8 @@ create table if not exists users_reviews
 create table if not exists alert(
     id bigint not null auto_increment,
     user_id bigint not null,
-    title varchar(20) not null,
-    `body` varchar(20) not null,
+    title text not null,
+    `body` text not null,
     type enum('BEFORE_MEETING'),
     created_at timestamp(6) not null,
     updated_at timestamp(6) not null,