diff --git a/CHANGES.md b/CHANGES.md
index e8c2167746..a1ecdccfa4 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -49,6 +49,15 @@ OpenSSL Releases
 
    *Tong Li*
 
+ *  Header files in OpenSSL are being changed to reflect modern development
+    practices - Include files should all be guarded for inclusion by a define
+    and must be self contained, meaning they include all dependencies they need
+    to compile on their own. Headers have been changed to include guards and
+    to include the dependencies they require.  Doing this will help the
+    future use of more modern tooling.
+
+    *Bob Beck*
+
  * `EVP_CIPHER_CTX_get_num()` and `EVP_CIPHER_CTX_set_num()' have been deprecated.
 
    Refer to ossl-migration-guide(7) for more info.