diff --git a/.gitmodules b/.gitmodules
index 8bcb1db..76c3ac8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,6 +7,12 @@
 #
 # Copyright 2024 林博仁(Buo-ren Lin) <buo.ren.lin@gmail.com>
 # SPDX-License-Identifier: CC-BY-SA-4.0
+[submodule "EditorConfig C Core"]
+	path = EditorConfig C Core
+	url = https://github.com/editorconfig/editorconfig-core-c.git
+	ignore = dirty
+	shallow = true
+	fetchRecurseSubmodules = false
 [submodule "The common EditorConfig template"]
 	path = The common EditorConfig template
 	url = https://gitlab.com/the-common/editorconfig-template.git
diff --git a/EditorConfig C Core b/EditorConfig C Core
new file mode 160000
index 0000000..e082c94
--- /dev/null
+++ b/EditorConfig C Core	
@@ -0,0 +1 @@
+Subproject commit e082c947e7f7b14240195d55c060a6e1eda1b0a1
diff --git a/README.md b/README.md
index 7cf0b6d..14c05fe 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,8 @@
 
 以下列舉本主題相關的解決方案：
 
+* [EditorConfig C Core](https://github.com/editorconfig/editorconfig-core-c)  
+  EditorConfig 的 C 語言核心程式庫
 * [The common EditorConfig template](https://gitlab.com/the-common/editorconfig-template)  
   A simple EditorConfig template to reuse.