diff --git a/packages/server/src/database/entities/Execution.ts b/packages/server/src/database/entities/Execution.ts
index 7f745123..87885cf8 100644
--- a/packages/server/src/database/entities/Execution.ts
+++ b/packages/server/src/database/entities/Execution.ts
@@ -18,7 +18,7 @@ export class Execution implements IExecution {
     agentflowId: string
 
     @Index()
-    @Column({ type: 'uuid' })
+    @Column({ type: 'varchar' })
     sessionId: string
 
     @Column({ nullable: true, type: 'text' })
diff --git a/packages/server/src/database/migrations/postgres/1748450230238-ModifyExecutionSessionIdFieldType.ts b/packages/server/src/database/migrations/postgres/1748450230238-ModifyExecutionSessionIdFieldType.ts
new file mode 100644
index 00000000..43656ff7
--- /dev/null
+++ b/packages/server/src/database/migrations/postgres/1748450230238-ModifyExecutionSessionIdFieldType.ts
@@ -0,0 +1,13 @@
+import { MigrationInterface, QueryRunner } from 'typeorm'
+
+export class ModifyExecutionSessionIdFieldType1748450230238 implements MigrationInterface {
+    name = 'ModifyExecutionSessionIdFieldType1748450230238'
+
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`ALTER TABLE "execution" ALTER COLUMN "sessionId" type varchar USING "sessionId"::varchar`)
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`ALTER TABLE "execution" ALTER COLUMN "sessionId" type uuid USING "sessionId"::uuid`)
+    }
+}
diff --git a/packages/server/src/database/migrations/postgres/index.ts b/packages/server/src/database/migrations/postgres/index.ts
index a711af2e..4da17daa 100644
--- a/packages/server/src/database/migrations/postgres/index.ts
+++ b/packages/server/src/database/migrations/postgres/index.ts
@@ -35,6 +35,7 @@ import { AddSeqNoToDatasetRow1733752119696 } from './1733752119696-AddSeqNoToDat
 import { AddExecutionEntity1738090872625 } from './1738090872625-AddExecutionEntity'
 import { FixOpenSourceAssistantTable1743758056188 } from './1743758056188-FixOpenSourceAssistantTable'
 import { AddErrorToEvaluationRun1744964560174 } from './1744964560174-AddErrorToEvaluationRun'
+import { ModifyExecutionSessionIdFieldType1748450230238 } from './1748450230238-ModifyExecutionSessionIdFieldType'
 
 import { AddAuthTables1720230151482 } from '../../../enterprise/database/migrations/postgres/1720230151482-AddAuthTables'
 import { AddWorkspace1720230151484 } from '../../../enterprise/database/migrations/postgres/1720230151484-AddWorkspace'
@@ -96,5 +97,6 @@ export const postgresMigrations = [
     AddExecutionEntity1738090872625,
     FixOpenSourceAssistantTable1743758056188,
     AddErrorToEvaluationRun1744964560174,
-    ExecutionLinkWorkspaceId1746862866554
+    ExecutionLinkWorkspaceId1746862866554,
+    ModifyExecutionSessionIdFieldType1748450230238
 ]