diff --git a/README.md b/README.md
index 3e2f383..1ed67bc 100644
--- a/README.md
+++ b/README.md
@@ -316,6 +316,7 @@
 - [安全狗SQL注入WAF绕过](./books/安全狗SQL注入WAF绕过.pdf)
 - [通过将JavaScript隐藏在PNG图片中，绕过CSP](https://www.secjuice.com/hiding-javascript-in-png-csp-bypass/)
 - [通达OA任意文件上传_文件包含GetShell](./books/通达OA任意文件上传_文件包含GetShell.pdf)
+- [文件上传Bypass安全狗4.0](./books/文件上传Bypass安全狗4.0.pdf)
 
 ## <span id="head9"> 说明</span>
 
diff --git a/books/文件上传Bypass安全狗4.0.pdf b/books/文件上传Bypass安全狗4.0.pdf
new file mode 100644
index 0000000..4a139fd
Binary files /dev/null and b/books/文件上传Bypass安全狗4.0.pdf differ