diff --git a/psi-ms.obo b/psi-ms.obo
index 00897f9..1279b15 100644
--- a/psi-ms.obo
+++ b/psi-ms.obo
@@ -1,5 +1,5 @@
 format-version: 1.2
-data-version: 4.1.160
+data-version: 4.1.161
 date: 13:07:2024 07:15
 saved-by: Colin Combe
 auto-generated-by: OBO-Edit 2.3.1
@@ -4707,6 +4707,12 @@ is_a: MS:1001455 ! acquisition software
 is_a: MS:1001456 ! analysis software
 is_a: MS:1001457 ! data processing software
 
+[Term]
+id: MS:1000660
+name: Xevo MRT MS
+def: "Waters Corporation Xevo MRT Mass Spectrometer." [PSI:MS]
+is_a: MS:1000126 ! Waters instrument model
+
 [Term]
 id: MS:1000661
 name: GPS Explorer