diff --git a/packages/bolt-sequelize/src/SlackAppInstallation.ts b/packages/bolt-sequelize/src/SlackAppInstallation.ts
index 7af7c72..d2d4902 100644
--- a/packages/bolt-sequelize/src/SlackAppInstallation.ts
+++ b/packages/bolt-sequelize/src/SlackAppInstallation.ts
@@ -73,12 +73,12 @@ export default class SlackAppInstallation extends Model {
       botToken: { type: DataTypes.STRING, allowNull: true },
       botId: { type: DataTypes.STRING, allowNull: true },
       botUserId: { type: DataTypes.STRING, allowNull: true },
-      botScopes: { type: DataTypes.STRING, allowNull: true },
+      botScopes: { type: DataTypes.TEXT('medium'), allowNull: true },
       botRefreshToken: { type: DataTypes.STRING, allowNull: true },
       botTokenExpiresAt: { type: DataTypes.DATE, allowNull: true },
       userId: { type: DataTypes.STRING, allowNull: false },
       userToken: { type: DataTypes.STRING, allowNull: true },
-      userScopes: { type: DataTypes.STRING, allowNull: true },
+      userScopes: { type: DataTypes.TEXT('medium'), allowNull: true },
       userRefreshToken: { type: DataTypes.STRING, allowNull: true },
       userTokenExpiresAt: { type: DataTypes.DATE, allowNull: true },
       incomingWebhookUrl: { type: DataTypes.STRING, allowNull: true },