diff --git a/languages/ruby/highlights.scm b/languages/ruby/highlights.scm
index 2fd808f..bc62ec4 100644
--- a/languages/ruby/highlights.scm
+++ b/languages/ruby/highlights.scm
@@ -198,6 +198,8 @@
   (float)
 ] @number
 
+(character) @string
+
 [
   (true)
   (false)