diff --git a/ChangeLog b/ChangeLog
index c2221a530..f92aef212 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -50,6 +50,8 @@ Bugfix
    * Fix 1 byte buffer overflow in mpi_write_string() when the MPI number to
      write in hexadecimal is negative and requires an odd number of digits.
      Found and fixed by Guido Vranken.
+   * Fix unlisted DES configuration dependency in some pkparse test cases. Found
+     by inestlerode. #555
 
 = mbed TLS 1.3.18 branch 2016-10-17