diff --git a/rubocop-rspec.gemspec b/rubocop-rspec.gemspec
index 243da3c95..c98ce4a1f 100644
--- a/rubocop-rspec.gemspec
+++ b/rubocop-rspec.gemspec
@@ -41,6 +41,9 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rack'
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'rspec', '>= 3.4'
-  spec.add_development_dependency 'simplecov'
+  # Workaround for cc-test-reporter with SimpleCov 0.18.
+  # Stop upgrading SimpleCov until the following issue will be resolved.
+  # https://github.com/codeclimate/test-reporter/issues/418
+  spec.add_development_dependency 'simplecov', '< 0.18'
   spec.add_development_dependency 'yard'
 end