diff --git a/modules/docs/src/Volo.Docs.Domain/Volo/Docs/FileSystem/Documents/FileSystemDocumentSource.cs b/modules/docs/src/Volo.Docs.Domain/Volo/Docs/FileSystem/Documents/FileSystemDocumentSource.cs
index aba271272ab..e16f81d2c9c 100644
--- a/modules/docs/src/Volo.Docs.Domain/Volo/Docs/FileSystem/Documents/FileSystemDocumentSource.cs
+++ b/modules/docs/src/Volo.Docs.Domain/Volo/Docs/FileSystem/Documents/FileSystemDocumentSource.cs
@@ -32,6 +32,8 @@ public async Task<Document> GetDocumentAsync(Project project, string documentNam
                 localDirectory = documentName.Substring(0, documentName.LastIndexOf('/'));
             }
 
+            version = File.GetLastWriteTime(path).ToString("yyyyMMddHHmmss");
+
             return new Document(GuidGenerator.Create(),
                 project.Id,
                 documentName,