diff --git a/pxii_bec/devices/device_list.md b/pxii_bec/devices/device_list.md
index 281bd14..3b03cd1 100644
--- a/pxii_bec/devices/device_list.md
+++ b/pxii_bec/devices/device_list.md
@@ -3,3 +3,4 @@
 ### pxii_bec 
 | Device | Documentation | Module |
 | :----- | :------------- | :------ |
+| UndulatorGap | <br>    SLS Undulator gap control<br>     | [pxii_bec.devices.undulator](https://gitlab.psi.ch/bec/pxii_bec/-/blob/main/pxii_bec/devices/undulator.py) |