Up min size of DHM params to 1024 bits on client
diff --git a/ChangeLog b/ChangeLog
index a206690..69bd936 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,9 +2,17 @@
 
 = mbed TLS 1.3.12 released 2015-07-??
 
+Security
+   * Increase the minimum size of Diffie-Hellman parameters accepted by the
+     client to 1024 bits, to protect against Logjam attack.
+
 Bugfix
    * Fix thread-safety issue in SSL debug module (found by Edwin van Vliet).
 
+Changes
+   * Add SSL_MIN_DHM_BYTES configuration parameter in config.h to choose the
+     minimum size of Diffie-Hellman parameters accepted by the client.
+
 = mbed TLS 1.3.11 released 2015-06-04
 
 Security