diff --git a/languages/ruby/highlights.scm b/languages/ruby/highlights.scm
index 2fd808f..c243cf3 100644
--- a/languages/ruby/highlights.scm
+++ b/languages/ruby/highlights.scm
@@ -230,6 +230,7 @@
   "<="
   ">="
   "=="
+  "==="
   "!="
   "=~"
   "!~"