diff --git a/lib/tzinfo/offset_rationals.rb b/lib/tzinfo/offset_rationals.rb
index <HASH>..<HASH> 100644
--- a/lib/tzinfo/offset_rationals.rb
+++ b/lib/tzinfo/offset_rationals.rb
@@ -1,5 +1,3 @@
-require 'rational' unless defined?(Rational)
-
 module TZInfo
 
   # Provides a method for getting Rationals for a timezone offset in seconds.
Remove `require 'rational'`.

This is no longer required on all supported Ruby versions.