diff --git a/split-api.gemspec b/split-api.gemspec
index e640e24..c378484 100644
--- a/split-api.gemspec
+++ b/split-api.gemspec
@@ -20,7 +20,7 @@ Gem::Specification.new do |gem|
   gem.add_dependency 'multi_json'
 
   gem.add_development_dependency 'bundler'
-  gem.add_development_dependency 'rspec',       '~> 3.11.0'
+  gem.add_development_dependency 'rspec',       '~> 3.13.0'
   gem.add_development_dependency 'rack-test',   '~> 2.1'
   gem.add_development_dependency 'rake',        '~> 13.0'
 end