diff --git a/ChangeLog.d/restore-x509-functions-to-public.txt b/ChangeLog.d/restore-x509-functions-to-public.txt
new file mode 100644
index 0000000000..fef0764e3d
--- /dev/null
+++ b/ChangeLog.d/restore-x509-functions-to-public.txt
@@ -0,0 +1,6 @@
+Bugfix
+   * Restore X509 functions erroneously removed from the public interface:
+     mbedtls_x509_dn_get_next(), mbedtls_x509_serial_gets(),
+     mbedtls_x509_time_cmp(), mbedtls_x509_time_gmtime(),
+     mbedtls_x509_time_is_past(), mbedtls_x509_time_is_future()
+     mbedtls_x509_parse_subject_alt_name(), mbedtls_x509_free_subject_alt_name()