diff --git a/Gemfile b/Gemfile
index 6f98e448f2b..78f7edbcc4e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -16,7 +16,7 @@ gem "actionpack-xml_parser"
 gem "roadie-rails"
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
-gem 'tzinfo-data', platforms: [:mingw, :x64_mingw, :mswin, :jruby]
+gem 'tzinfo-data', :platforms => [:mingw, :x64_mingw, :mswin, :jruby]
 gem "rbpdf", "~> 1.18.6"
 
 # Optional gem for LDAP authentication