diff --git a/README.rst b/README.rst
index b227d72..4f400fa 100644
--- a/README.rst
+++ b/README.rst
@@ -55,7 +55,7 @@ This library has been tested against the following devices and firmwares:
 +--------+-----------------------+---------------------------------------+
 | TS-410 | 4.2.3                 | This device does not report CPU temps |
 +--------+-----------------------+---------------------------------------+
-| TS-451 | 4.2.2, 4.2.3          |                                       |
+| TS-451 | 4.2.2, 4.2.3, 4.2.4   |                                       |
 +--------+-----------------------+---------------------------------------+
 | TS-639 | 4.2.3                 |                                       |
 +--------+-----------------------+---------------------------------------+