diff --git a/circle-mbedtls.md b/circle-mbedtls.md
index c7e759b..ff027b4 100644
--- a/circle-mbedtls.md
+++ b/circle-mbedtls.md
@@ -28,12 +28,18 @@ subdirectory. Go to the subdirectory of the sample of your choice and do `make`.
 
 ## Current State
 
-V1.12:
+V1.13:
 
-* Uses Mbed TLS 2.28.8
+* Uses Mbed TLS 2.28.9
+* Fix issue in mqttclient.cpp, which caused an invalid payload delivered,
+  when multiple publish messages arrived at once.
 
 ## Previous Releases
 
+V1.12:
+
+* Uses Mbed TLS 2.28.8
+
 V1.11:
 
 * Uses Mbed TLS 2.18.4