diff --git a/queries/c_sharp/highlights.scm b/queries/c_sharp/highlights.scm
index 3c9b7756f..3ecdffb6e 100644
--- a/queries/c_sharp/highlights.scm
+++ b/queries/c_sharp/highlights.scm
@@ -364,6 +364,7 @@
  "readonly"
  "static"
  "volatile"
+ "required"
 ] @storageclass
 
 [