diff --git a/packages/server/src/database/entities/ChatFlow.ts b/packages/server/src/database/entities/ChatFlow.ts
index a1a32a88..a4fdd130 100644
--- a/packages/server/src/database/entities/ChatFlow.ts
+++ b/packages/server/src/database/entities/ChatFlow.ts
@@ -22,7 +22,7 @@ export class ChatFlow implements IChatFlow {
     @Column({ nullable: true })
     apikeyid?: string
 
-    @Column({ nullable: true })
+    @Column({ nullable: true, type: 'text' })
     chatbotConfig?: string
 
     @CreateDateColumn()
diff --git a/packages/server/src/database/entities/ChatMessage.ts b/packages/server/src/database/entities/ChatMessage.ts
index 23804846..4b5306ee 100644
--- a/packages/server/src/database/entities/ChatMessage.ts
+++ b/packages/server/src/database/entities/ChatMessage.ts
@@ -17,7 +17,7 @@ export class ChatMessage implements IChatMessage {
     @Column({ type: 'text' })
     content: string
 
-    @Column({ nullable: true })
+    @Column({ nullable: true, type: 'text' })
     sourceDocuments?: string
 
     @CreateDateColumn()
diff --git a/packages/server/src/database/entities/Credential.ts b/packages/server/src/database/entities/Credential.ts
index e77711dc..822f2584 100644
--- a/packages/server/src/database/entities/Credential.ts
+++ b/packages/server/src/database/entities/Credential.ts
@@ -13,7 +13,7 @@ export class Credential implements ICredential {
     @Column()
     credentialName: string
 
-    @Column()
+    @Column({ type: 'text' })
     encryptedData: string
 
     @CreateDateColumn()
diff --git a/packages/server/src/database/entities/Tool.ts b/packages/server/src/database/entities/Tool.ts
index d459eee3..8e675eb0 100644
--- a/packages/server/src/database/entities/Tool.ts
+++ b/packages/server/src/database/entities/Tool.ts
@@ -19,10 +19,10 @@ export class Tool implements ITool {
     @Column({ nullable: true })
     iconSrc?: string
 
-    @Column({ nullable: true })
+    @Column({ nullable: true, type: 'text' })
     schema?: string
 
-    @Column({ nullable: true })
+    @Column({ nullable: true, type: 'text' })
     func?: string
 
     @CreateDateColumn()