diff --git a/README.en.md b/README.en.md
index bbdd99f..95099cc 100644
--- a/README.en.md
+++ b/README.en.md
@@ -21,6 +21,7 @@ Alternatively, you can download the zip package with the `SelfContained` suffix,
 ## Features
 
 - Supports viewing Spine files of different versions:
+    - [x] `v2.1.x`
     - [x] `v3.6.x`
     - [x] `v3.7.x`
     - [x] `v3.8.x`
diff --git a/README.md b/README.md
index a4c7b36..808cec5 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,7 @@
 ## 功能
 
 - 支持不同版本 Spine 查看
+    - [x] `v2.1.x`
     - [x] `v3.6.x`
     - [x] `v3.7.x`
     - [x] `v3.8.x`
diff --git a/SpineViewer.sln b/SpineViewer.sln
index 9c78181..de704fa 100644
--- a/SpineViewer.sln
+++ b/SpineViewer.sln
@@ -15,6 +15,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 	ProjectSection(SolutionItems) = preProject
 		.editorconfig = .editorconfig
 		.gitignore = .gitignore
+		README.en.md = README.en.md
 		README.md = README.md
 	EndProjectSection
 EndProject