diff --git a/README.md b/README.md
index 5370128b7..bbeba8703 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ OpenThread released by Google is... <a href="https://www.threadgroup.org/What-is
 
 **...OS and platform agnostic**, with a narrow platform abstraction layer and a small memory footprint, making it highly portable. It supports both system-on-chip (SoC) and network co-processor (NCP) designs.
 
-**...a Thread Certified Component**, implementing all features defined in the [Thread 1.1.1 specification](https://www.threadgroup.org/support#specifications), including all Thread networking layers (IPv6, 6LoWPAN, IEEE 802.15.4 with MAC security, Mesh Link Establishment, Mesh Routing) and device roles, as well as [Border Router](https://github.com/openthread/ot-br-posix) support.
+**...a Thread Certified Component**, implementing all features defined in the [Thread 1.2 specification](https://www.threadgroup.org/support#specifications), including all Thread networking layers (IPv6, 6LoWPAN, IEEE 802.15.4 with MAC security, Mesh Link Establishment, Mesh Routing) and device roles, as well as [Border Router](https://github.com/openthread/ot-br-posix) support.
 
 More information about Thread can be found at [threadgroup.org](http://threadgroup.org/). Thread is a registered trademark of the Thread Group, Inc.