diff --git a/docs/reference/api/ModemManager-sections.txt b/docs/reference/api/ModemManager-sections.txt
index 16659095..54398f49 100644
--- a/docs/reference/api/ModemManager-sections.txt
+++ b/docs/reference/api/ModemManager-sections.txt
@@ -222,6 +222,7 @@ ID_MM_PORT_TYPE_QMI
 ID_MM_PORT_TYPE_MBIM
 ID_MM_TTY_BAUDRATE
 ID_MM_TTY_FLOW_CONTROL
+ID_MM_REQUIRED
 <SUBSECTION Deprecated>
 ID_MM_TTY_BLACKLIST
 ID_MM_TTY_MANUAL_SCAN_ONLY