diff --git a/src/modules/workflow/Infrastructure/Persistence/Configurations/WorkflowInstanceConfiguration.cs b/src/modules/workflow/Infrastructure/Persistence/Configurations/WorkflowInstanceConfiguration.cs
index c55c34f..2ee3de0 100644
--- a/src/modules/workflow/Infrastructure/Persistence/Configurations/WorkflowInstanceConfiguration.cs
+++ b/src/modules/workflow/Infrastructure/Persistence/Configurations/WorkflowInstanceConfiguration.cs
@@ -16,6 +16,8 @@ public class WorkflowInstanceConfiguration : IEntityTypeConfiguration<WorkflowIn
         builder.HasKey(e => e.Id);
         builder.Property(e => e.Id).ValueGeneratedNever().HasComment("主键ID");
         builder.Property(e => e.DefinitionId).HasComment("关联的工作流定义ID");
+        builder.Property(e => e.DefinitionVersion).HasComment("启动时绑定的流程定义版本号（版本隔离）");
+        builder.Property(e => e.DefinitionCode).HasMaxLength(200).HasComment("启动时快照的流程定义Code（审计追溯）");
         builder.Property(e => e.Title).HasMaxLength(500).HasComment("流程实例标题");
         builder.Property(e => e.Status).HasComment("实例状态（Running/Suspended/Completed/Terminated）");
         builder.Property(e => e.Variables).HasColumnType("jsonb").HasComment("流程变量JSON");