diff --git a/Gemfile b/Gemfile
index 3020708..da22e5f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -36,7 +36,7 @@ end
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 # and associated library.
 install_if -> { RUBY_PLATFORM =~ %r!mingw|mswin|java! } do
-  gem "tzinfo", "~> 1.2"
+  gem "tzinfo", "~> 2.0"
   gem "tzinfo-data"
 end