diff --git a/lockfile.json b/lockfile.json
index 0c671acc8..07ca9dea1 100644
--- a/lockfile.json
+++ b/lockfile.json
@@ -324,7 +324,7 @@
     "revision": "6858695eba0e63b9e0fceef081d291eb352abce8"
   },
   "idl": {
-    "revision": "995d917f120ef428a086d15935d20ab2fb8c345c"
+    "revision": "d8c1cf254f2e9d0cf9f111190c408bf3480e34e2"
   },
   "ini": {
     "revision": "87176e524f0a98f5be75fa44f4f0ff5c6eac069c"
diff --git a/queries/idl/highlights.scm b/queries/idl/highlights.scm
index 051690836..9c51513d9 100644
--- a/queries/idl/highlights.scm
+++ b/queries/idl/highlights.scm
@@ -106,7 +106,12 @@
 
 (boolean_literal) @boolean
 
-(number_literal) @number
+(integer_literal) @number
+
+[
+  (floating_pt_literal)
+  (fixed_pt_literal)
+] @number.float
 
 (char_literal) @character
 
@@ -400,3 +405,11 @@
 (system_lib_string
   "<" @string
   ">" @string)
+
+(extend_annotation_appl
+  "//@" @attribute
+  (annotation_appl_custom_body))
+
+(extend_annotation_appl
+  "//@" @attribute.builtin
+  (annotation_appl_builtin_body))