diff --git a/README.md b/README.md
index 7a74c83346c..420eaa670eb 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,8 @@ pkpy is extremely easy to embed via a single header file `pocketpy.h`, without e
 
 Please see https://pocketpy.dev for details or try [Live Demo](https://pocketpy.dev/static/web/).
 
+<a href="https://www.buymeacoffee.com/blueloveTH"><img src="https://img.buymeacoffee.com/button-api/?text=Buy me a coffee&emoji=&slug=blueloveTH&button_colour=FF5F5F&font_colour=ffffff&font_family=Bree&outline_colour=000000&coffee_colour=FFDD00" /></a>
+
 ## Quick start
 
 Download the `pocketpy.h` on our [GitHub Release](https://github.com/blueloveTH/pocketpy/releases) page.
diff --git a/README_zh.md b/README_zh.md
index a09e4ee96fc..1e2cbc53cab 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -14,6 +14,8 @@ pocketpy是一个轻量级的Python解释器，为嵌入至游戏引擎而设计
 
 你可以 [在浏览器中体验](https://pocketpy.dev/static/web/) pocketpy的交互式界面（REPL）。
 
+<a href="https://www.buymeacoffee.com/blueloveTH"><img src="https://img.buymeacoffee.com/button-api/?text=Buy me a coffee&emoji=&slug=blueloveTH&button_colour=FF5F5F&font_colour=ffffff&font_family=Bree&outline_colour=000000&coffee_colour=FFDD00" /></a>
+
 ## 快速上手
 
 你可以在 [Github Release](https://github.com/blueloveTH/pocketpy/releases) 页面下载`pocketpy.h`，
diff --git a/docs/index.md b/docs/index.md
index 03fbf81a05d..7004e25d8a2 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -24,4 +24,8 @@ def is_prime(x):
 primes = [i for i in range(2, 20) if is_prime(i)]
 print(primes)
 # [2, 3, 5, 7, 11, 13, 17, 19]
-```
\ No newline at end of file
+```
+
+## Sponsor me
+
+<a href="https://www.buymeacoffee.com/blueloveTH"><img src="https://img.buymeacoffee.com/button-api/?text=Buy me a coffee&emoji=&slug=blueloveTH&button_colour=FF5F5F&font_colour=ffffff&font_family=Bree&outline_colour=000000&coffee_colour=FFDD00" /></a>
\ No newline at end of file