diff --git a/tools/toylang.vscode-highlighting/syntaxes/toy.tmLanguage.json b/tools/toylang.vscode-highlighting/syntaxes/toy.tmLanguage.json
index 743a5a4..3f41b47 100644
--- a/tools/toylang.vscode-highlighting/syntaxes/toy.tmLanguage.json
+++ b/tools/toylang.vscode-highlighting/syntaxes/toy.tmLanguage.json
@@ -44,7 +44,7 @@
 			},
 			{
 				"name": "keyword.type.toy",
-				"match": "\\b(any|bool|const|float|int|string|type)\\b"
+				"match": "\\b(any|bool|const|float|int|opaque|string|type)\\b"
 			},
 			{
 				"name": "keyword.other.toy",
@@ -82,4 +82,4 @@
 		}
 	},
 	"scopeName": "source.toy"
-}
\ No newline at end of file
+}