diff --git a/README.md b/README.md
index ffe3392..f32cd08 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
-Safari 5 tabs on Safari 6+, cosy.
+Safari 5 tabs on Safari 6+. Cosy.
 
-Tested on Safari 6, 7, 8.
+Tested on Safari 6, 7, 8, 9.
 
 ### Preview
 
@@ -8,7 +8,21 @@ Tested on Safari 6, 7, 8.
 
 ![After](http://i.imgur.com/uvlTtyt.png)
 
-### How to Install
+## How to Install
+
+### El Capitan (OS X 10.11)
+
+EasySIMBL does not work anymore because of the [System Integrity Protection](https://en.wikipedia.org/wiki/System_Integrity_Protection) introduced in El Capitan.
+
+It has been confirmed that the old SIMBL-0.9.9 works, but only after disabling SIP.
+
+Here's the guide for installing SIMBL on El Capitan: https://github.com/norio-nomura/EasySIMBL/issues/26#issuecomment-117028426
+
+##### For advanced users
+
+Obviously, there is no need to disable SIP (and reboot 4+ times). If you can extract SIMBL from the .pkg, boot into Recovery or any other OS, then you can simply copy the SIMBL's files to the correct paths.
+
+### Yosemite and older (OS X 10.7+)
 
 1. Download and install [EasySIMBL](https://github.com/norio-nomura/EasySIMBL/#how-to-install)
 2. Download cosyTabs here: [Releases](https://github.com/inket/cosyTabs/releases)