diff --git a/EnvelopeGenerator.Domain/Entities/Annotation.cs b/EnvelopeGenerator.Domain/Entities/Annotation.cs
index fcf88f58..b0edcb2a 100644
--- a/EnvelopeGenerator.Domain/Entities/Annotation.cs
+++ b/EnvelopeGenerator.Domain/Entities/Annotation.cs
@@ -16,7 +16,7 @@ public class Annotation
 {
     [Key]
     [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    [Column("GUID", TypeName = "int")]
+    [Column("GUID", TypeName = "bigint")]
     public long Id { get; set; }
 
     [Required]