diff --git a/packages/server/src/entities/BaseEntitySchemaPart.ts b/packages/server/src/entities/BaseEntitySchemaPart.ts
index 900125a..7c27934 100644
--- a/packages/server/src/entities/BaseEntitySchemaPart.ts
+++ b/packages/server/src/entities/BaseEntitySchemaPart.ts
@@ -5,20 +5,23 @@ const transformer = {
   to: (value: undefined | null | string) => value ? new Date(value) : value,
 }
 
-export const BaseEntitySchemaPart: Record<
-  'id' | 'createDate' | 'updateDate', EntitySchemaColumnOptions> = {
+export const BaseEntitySchemaPart: {
+  id: EntitySchemaColumnOptions
+  createDate: EntitySchemaColumnOptions
+  updateDate: EntitySchemaColumnOptions
+} = {
   id: {
-    type: 'integer',
+    type: Number,
     primary: true,
     generated: true,
   },
   createDate: {
-    type: 'datetime',
+    type: Date,
     createDate: true,
     transformer,
   },
   updateDate: {
-    type: 'datetime',
+    type: Date,
     updateDate: true,
     transformer,
   },
diff --git a/packages/server/src/entities/SessionEntity.ts b/packages/server/src/entities/SessionEntity.ts
index 7933f9a..982efe3 100644
--- a/packages/server/src/entities/SessionEntity.ts
+++ b/packages/server/src/entities/SessionEntity.ts
@@ -9,7 +9,7 @@ export const SessionEntity = new EntitySchema<Session>({
       primary: true,
     },
     expiredAt: {
-      type: Number,
+      type: 'bigint',
       // default: () => Date.now(),
     },
     userId: {
diff --git a/packages/server/src/migrations/1569211662484-session_expiredAt_bigint.ts b/packages/server/src/migrations/1569211662484-session_expiredAt_bigint.ts
new file mode 100644
index 0000000..a660482
--- /dev/null
+++ b/packages/server/src/migrations/1569211662484-session_expiredAt_bigint.ts
@@ -0,0 +1,35 @@
+import {MigrationInterface, QueryRunner} from "typeorm";
+
+export class sessionExpiredAtBigint1569211662484 implements MigrationInterface {
+
+    public async up(queryRunner: QueryRunner): Promise<any> {
+        await queryRunner.query(`DROP INDEX "IDX_28c5d1d16da7908c97c9bc2f74"`, undefined);
+        await queryRunner.query(`CREATE TABLE "temporary_session" ("id" varchar PRIMARY KEY NOT NULL, "expiredAt" integer NOT NULL, "userId" integer, "json" text NOT NULL, CONSTRAINT "FK_3d2f174ef04fb312fdebd0ddc53" FOREIGN KEY ("userId") REFERENCES "user" ("id") ON DELETE NO ACTION ON UPDATE NO ACTION)`, undefined);
+        await queryRunner.query(`INSERT INTO "temporary_session"("id", "expiredAt", "userId", "json") SELECT "id", "expiredAt", "userId", "json" FROM "session"`, undefined);
+        await queryRunner.query(`DROP TABLE "session"`, undefined);
+        await queryRunner.query(`ALTER TABLE "temporary_session" RENAME TO "session"`, undefined);
+        await queryRunner.query(`CREATE INDEX "IDX_28c5d1d16da7908c97c9bc2f74" ON "session" ("expiredAt") `, undefined);
+        await queryRunner.query(`DROP INDEX "IDX_28c5d1d16da7908c97c9bc2f74"`, undefined);
+        await queryRunner.query(`CREATE TABLE "temporary_session" ("id" varchar PRIMARY KEY NOT NULL, "expiredAt" bigint NOT NULL, "userId" integer, "json" text NOT NULL, CONSTRAINT "FK_3d2f174ef04fb312fdebd0ddc53" FOREIGN KEY ("userId") REFERENCES "user" ("id") ON DELETE NO ACTION ON UPDATE NO ACTION)`, undefined);
+        await queryRunner.query(`INSERT INTO "temporary_session"("id", "expiredAt", "userId", "json") SELECT "id", "expiredAt", "userId", "json" FROM "session"`, undefined);
+        await queryRunner.query(`DROP TABLE "session"`, undefined);
+        await queryRunner.query(`ALTER TABLE "temporary_session" RENAME TO "session"`, undefined);
+        await queryRunner.query(`CREATE INDEX "IDX_28c5d1d16da7908c97c9bc2f74" ON "session" ("expiredAt") `, undefined);
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<any> {
+        await queryRunner.query(`DROP INDEX "IDX_28c5d1d16da7908c97c9bc2f74"`, undefined);
+        await queryRunner.query(`ALTER TABLE "session" RENAME TO "temporary_session"`, undefined);
+        await queryRunner.query(`CREATE TABLE "session" ("id" varchar PRIMARY KEY NOT NULL, "expiredAt" integer NOT NULL, "userId" integer, "json" text NOT NULL, CONSTRAINT "FK_3d2f174ef04fb312fdebd0ddc53" FOREIGN KEY ("userId") REFERENCES "user" ("id") ON DELETE NO ACTION ON UPDATE NO ACTION)`, undefined);
+        await queryRunner.query(`INSERT INTO "session"("id", "expiredAt", "userId", "json") SELECT "id", "expiredAt", "userId", "json" FROM "temporary_session"`, undefined);
+        await queryRunner.query(`DROP TABLE "temporary_session"`, undefined);
+        await queryRunner.query(`CREATE INDEX "IDX_28c5d1d16da7908c97c9bc2f74" ON "session" ("expiredAt") `, undefined);
+        await queryRunner.query(`DROP INDEX "IDX_28c5d1d16da7908c97c9bc2f74"`, undefined);
+        await queryRunner.query(`ALTER TABLE "session" RENAME TO "temporary_session"`, undefined);
+        await queryRunner.query(`CREATE TABLE "session" ("id" varchar PRIMARY KEY NOT NULL, "expiredAt" integer NOT NULL, "userId" integer, "json" text NOT NULL, CONSTRAINT "FK_3d2f174ef04fb312fdebd0ddc53" FOREIGN KEY ("userId") REFERENCES "user" ("id") ON DELETE NO ACTION ON UPDATE NO ACTION)`, undefined);
+        await queryRunner.query(`INSERT INTO "session"("id", "expiredAt", "userId", "json") SELECT "id", "expiredAt", "userId", "json" FROM "temporary_session"`, undefined);
+        await queryRunner.query(`DROP TABLE "temporary_session"`, undefined);
+        await queryRunner.query(`CREATE INDEX "IDX_28c5d1d16da7908c97c9bc2f74" ON "session" ("expiredAt") `, undefined);
+    }
+
+}
diff --git a/packages/server/src/migrations/index.ts b/packages/server/src/migrations/index.ts
index 9cee5a0..f9e72c8 100644
--- a/packages/server/src/migrations/index.ts
+++ b/packages/server/src/migrations/index.ts
@@ -9,3 +9,4 @@ export * from './1548412884820-role-unique'
 export * from './1552227347990-comment-parentid-nullable'
 export * from './1552227652042-nullable'
 export * from './1552899385211-user-first-last-name'
+export * from './1569211662484-session_expiredAt_bigint'