diff --git a/queries/query/highlights.scm b/queries/query/highlights.scm
index 19f2fbb01..515055449 100644
--- a/queries/query/highlights.scm
+++ b/queries/query/highlights.scm
@@ -23,5 +23,8 @@
 "@" @punctuation.special
 "_" @constant
 
+((parameters (identifier) @number)
+ (#match? @number "^[-+]?[0-9]+(.[0-9]+)?$"))
+
 ((program . (comment) @include)
  (#match? @include "^;\ +inherits\ *:"))