[ci skip] Use INTL_IDNA_VARIANT_UCS46 to convert non-ASCII domain names in emails
Close #5300
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index d222e17..647fe48 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -7,6 +7,11 @@
Release Date: Not Released
+- General Changes
+
+ - Updated :doc:`Form Validation Library <libraries/form_validation>` rule ``valid_email`` to use ``INTL_IDNA_VARIANT_UCS46`` for non-ASCII domain names.
+ - Updated :doc:`Email Library <libraries/email>` to use ``INTL_IDNA_VARIANT_UCS46`` for non-ASCII domain names.
+
Bug fixes for 3.1.7
-------------------