diff --git a/queries/python/highlights.scm b/queries/python/highlights.scm
index b8b8b7b94..54ad82b09 100644
--- a/queries/python/highlights.scm
+++ b/queries/python/highlights.scm
@@ -227,6 +227,8 @@
   "is"
   "not"
   "or"
+  "is not"
+  "not in"
 
   "del"
 ] @keyword.operator