diff --git a/openproject-xls_export.gemspec b/openproject-xls_export.gemspec
index f4fad915a0..5fcef30894 100644
--- a/openproject-xls_export.gemspec
+++ b/openproject-xls_export.gemspec
@@ -16,6 +16,6 @@ Gem::Specification.new do |s|
 
   s.files = Dir["{app,config,db,lib}/**/*"] + %w(CHANGELOG.md README.md)
 
-  s.add_dependency 'rails', '~> 4.1.13'
+  s.add_dependency 'rails', '~> 4.2.4'
   s.add_dependency "spreadsheet", "~>0.8.9"
 end