diff --git a/README.rst b/README.rst
index 86bb769..6e62bbc 100644
--- a/README.rst
+++ b/README.rst
@@ -72,7 +72,10 @@ Set your nhentai cookie against captcha:
 
     nhentai --cookie "YOUR COOKIE FROM nhentai.net"
 
-**NOTE**: The format of the cookie is `"csrftoken=TOKEN; sessionid=ID; cf_chl_2=CLOUDFLARE; cf_chl_prog=CLOUDFLARE; cf_clearance=CLOUDFLARE"`
+**NOTE**
+
+- The format of the cookie is `"csrftoken=TOKEN; sessionid=ID; cf_clearance=CLOUDFLARE"`
+- `cf_clearance` cookie and useragent must be set if you encounter "blocked by cloudflare captcha" error. Make sure you use the same IP and useragent as when you got it
 
 | To get csrftoken and sessionid, first login to your nhentai account in web browser, then:
 | (Chrome) |ve| |ld| More tools    |ld| Developer tools     |ld| Application |ld| Storage |ld| Cookies |ld| https://nhentai.net