Prepare for 1.3.12 release
diff --git a/ChangeLog b/ChangeLog
index c2b03e5..2da6a2a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,6 @@
 mbed TLS ChangeLog (Sorted per branch, date)
 
-= mbed TLS 1.3.12 released 2015-07-??
+= mbed TLS 1.3.12 released 2015-08-11
 
 Security
    * Increase the minimum size of Diffie-Hellman parameters accepted by the