diff --git a/blacklight.gemspec b/blacklight.gemspec
index c36ddaa64d..657994b0df 100644
--- a/blacklight.gemspec
+++ b/blacklight.gemspec
@@ -40,7 +40,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency "rspec-collection_matchers", ">= 1.0"
   s.add_development_dependency "capybara", '~> 2.6.0'
   s.add_development_dependency "poltergeist"
-  s.add_development_dependency 'engine_cart', '~> 0.10'
+  s.add_development_dependency 'engine_cart', '~> 1.0'
   s.add_development_dependency "equivalent-xml"
   s.add_development_dependency "coveralls"
   s.add_development_dependency "simplecov"