diff --git a/changelogs/fragments/724-redshift_subnet_group-boto3.yml b/changelogs/fragments/724-redshift_subnet_group-boto3.yml
new file mode 100644
index 00000000000..d760eb4c2b8
--- /dev/null
+++ b/changelogs/fragments/724-redshift_subnet_group-boto3.yml
@@ -0,0 +1,7 @@
+minor_changes:
+- redshift_subnet_group - the module has been migrated to the boto3 AWS SDK (https://github.com/ansible-collections/community.aws/pull/724).
+- redshift_subnet_group - added support for check_mode (https://github.com/ansible-collections/community.aws/pull/724).
+- redshift_subnet_group - the ``group_description`` option has been renamed to ``description`` and is now optional.
+  The old parameter name will continue to work (https://github.com/ansible-collections/community.aws/pull/724).
+- redshift_subnet_group - the ``group_subnets`` option has been renamed to ``subnets`` and is now only required when creating a new group.
+  The old parameter name will continue to work (https://github.com/ansible-collections/community.aws/pull/724).