diff --git a/python/lsst/ts/xml/enums/__init__.py b/python/lsst/ts/xml/enums/__init__.py
index e720bb71..d6e1d42a 100644
--- a/python/lsst/ts/xml/enums/__init__.py
+++ b/python/lsst/ts/xml/enums/__init__.py
@@ -25,6 +25,7 @@
     ESS,
     GIS,
     HVAC,
+    MOSS,
     MTAOS,
     MTM1M3,
     MTM2,