diff --git a/dm-aggregates.gemspec b/dm-aggregates.gemspec
index 228eb31..a9dde0a 100644
--- a/dm-aggregates.gemspec
+++ b/dm-aggregates.gemspec
@@ -20,5 +20,5 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency('dm-core', '~> 1.2')
 
   gem.add_development_dependency('rake',  '~> 10.0')
-  gem.add_development_dependency('rspec', '~> 2.0')
+  gem.add_development_dependency('rspec', '~> 3.0')
 end