diff --git a/tabulo.gemspec b/tabulo.gemspec
index 1da8794..19da962 100644
--- a/tabulo.gemspec
+++ b/tabulo.gemspec
@@ -29,7 +29,7 @@ Gem::Specification.new do |spec|
   }
 
   spec.add_runtime_dependency "tty-screen", "0.8.1"
-  spec.add_runtime_dependency "unicode-display_width", "2.2.0"
+  spec.add_runtime_dependency "unicode-display_width", "~> 2.2"
 
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake", "~> 13.0"