diff --git a/packages/admin.gbapp/models/AdminModel.ts b/packages/admin.gbapp/models/AdminModel.ts
index 236c9746..c86506e0 100644
--- a/packages/admin.gbapp/models/AdminModel.ts
+++ b/packages/admin.gbapp/models/AdminModel.ts
@@ -62,9 +62,9 @@ export class GuaribasAdmin extends Model<GuaribasAdmin> {
 
   @Column
   @CreatedAt
-  public createdAt: Date;
+  declare public createdAt: Date;
 
   @Column
   @UpdatedAt
-  public updatedAt: Date;
+  declare public updatedAt: Date;
 }
diff --git a/packages/analytics.gblib/models/index.ts b/packages/analytics.gblib/models/index.ts
index 21a96a18..03e0f234 100644
--- a/packages/analytics.gblib/models/index.ts
+++ b/packages/analytics.gblib/models/index.ts
@@ -96,7 +96,7 @@ export class GuaribasConversation extends Model<GuaribasConversation> {
 
   @Column
   @CreatedAt
-  public createdAt: Date;
+  declare public createdAt: Date;
 
   @Column public text: string;
 
@@ -128,11 +128,11 @@ export class GuaribasConversationMessage extends Model<GuaribasConversationMessa
 
   @Column
   @CreatedAt
-  public createdAt: Date;
+  declare public createdAt: Date;
 
   @Column
   @UpdatedAt
-  public updatedAt: Date;
+  declare public updatedAt: Date;
 
   //tslint:disable-next-line:no-use-before-declare
   @ForeignKey(() => GuaribasConversation)
diff --git a/packages/basic.gblib/models/Model.ts b/packages/basic.gblib/models/Model.ts
index e90a081e..2aa47da6 100644
--- a/packages/basic.gblib/models/Model.ts
+++ b/packages/basic.gblib/models/Model.ts
@@ -70,9 +70,9 @@ export class GuaribasSchedule extends Model<GuaribasSchedule> {
 
   @Column
   @CreatedAt
-  public createdAt: Date;
+  declare public createdAt: Date;
 
   @Column
   @UpdatedAt
-  public updatedAt: Date;
+  declare public updatedAt: Date;
 }
diff --git a/packages/core.gbapp/models/GBModel.ts b/packages/core.gbapp/models/GBModel.ts
index dbde78d8..e060ab6b 100644
--- a/packages/core.gbapp/models/GBModel.ts
+++ b/packages/core.gbapp/models/GBModel.ts
@@ -244,11 +244,11 @@ export class GuaribasInstance extends Model<GuaribasInstance>
 
   @Column
   @CreatedAt
-  public createdAt: Date;
+  declare public createdAt: Date;
 
   @Column
   @UpdatedAt
-  public updatedAt: Date;
+  declare public updatedAt: Date;
 
   @Column(DataType.STRING(4000))
   public params: string;
@@ -276,11 +276,11 @@ export class GuaribasPackage extends Model<GuaribasPackage> {
 
   @Column
   @CreatedAt
-  public createdAt: Date;
+  declare public createdAt: Date;
 
   @Column
   @UpdatedAt
-  public updatedAt: Date;
+  declare public updatedAt: Date;
 
   @Column({ type: DataType.STRING(512) })
   public custom: string;
@@ -301,11 +301,11 @@ export class GuaribasChannel extends Model<GuaribasChannel> {
 
   @Column
   @CreatedAt
-  public createdAt: Date;
+  declare public createdAt: Date;
 
   @Column
   @UpdatedAt
-  public updatedAt: Date;
+  declare public updatedAt: Date;
 }
 
 /**
@@ -331,11 +331,11 @@ export class GuaribasException extends Model<GuaribasException> {
 
   @Column
   @CreatedAt
-  public createdAt: Date;
+  declare public createdAt: Date;
 
   @Column
   @UpdatedAt
-  public updatedAt: Date;
+  declare public updatedAt: Date;
 }
 
 @Table
@@ -354,11 +354,11 @@ export class GuaribasApplications extends Model<GuaribasApplications> {
 
   @Column
   @CreatedAt
-  public createdAt: Date;
+  declare public createdAt: Date;
 
   @Column
   @UpdatedAt
-  public updatedAt: Date;
+  declare public updatedAt: Date;
 }
 
 @Table
@@ -380,9 +380,9 @@ export class GuaribasSchedule extends Model<GuaribasSchedule> {
 
   @Column
   @CreatedAt
-  public createdAt: Date;
+  declare public createdAt: Date;
 
   @Column
   @UpdatedAt
-  public updatedAt: Date;
+  declare public updatedAt: Date;
 }
diff --git a/packages/kb.gbapp/models/index.ts b/packages/kb.gbapp/models/index.ts
index a0cbfd7c..f7a88cea 100644
--- a/packages/kb.gbapp/models/index.ts
+++ b/packages/kb.gbapp/models/index.ts
@@ -158,11 +158,11 @@ export class GuaribasQuestion extends Model<GuaribasQuestion> {
 
   @Column
   @CreatedAt
-  public createdAt: Date;
+  declare public createdAt: Date;
 
   @Column
   @UpdatedAt
-  public updatedAt: Date;
+  declare public updatedAt: Date;
 
   //tslint:disable-next-line:no-use-before-declare
   @ForeignKey(() => GuaribasAnswer)
@@ -207,11 +207,11 @@ export class GuaribasAnswer extends Model<GuaribasAnswer> {
 
   @Column
   @CreatedAt
-  public createdAt: Date;
+  declare public createdAt: Date;
 
   @Column
   @UpdatedAt
-  public updatedAt: Date;
+  declare public updatedAt: Date;
 
   @HasMany(() => GuaribasQuestion)
   public questions: GuaribasQuestion[];