Adapt ChangeLog
diff --git a/ChangeLog b/ChangeLog
index e7a23ae..4674137 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,15 @@
 
 = mbed TLS x.x.x branch released xxxx-xx-xx
 
+Security
+   * Fix overly strict DN comparison when looking for CRLs
+     belonging to a particular CA. This previously lead to
+     ignoring CRLs when the CRL's issuer name and the CA's
+     subject name differed in their string encoding (e.g.,
+     one using PrintableString and the other UTF8String) or
+     in the choice of upper and lower case. Reported by
+     HenrikRosenquistAndersson in #1784.
+
 Bugfix
    * Fix failure in hmac_drbg in the benchmark sample application, when
      MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095