Update library version to 2.16.1
diff --git a/ChangeLog b/ChangeLog
index afbe2f6..287e5e4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,6 @@
 mbed TLS ChangeLog (Sorted per branch, date)
 
-= mbed TLS 2.x.x branch released xxxx-xx-xx
+= mbed TLS 2.16.1 branch released 2019-03-19
 
 Features
    * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites