diff --git a/spec/benchmark_spec.rb b/spec/benchmark_spec.rb
index cc385bc..91c9286 100644
--- a/spec/benchmark_spec.rb
+++ b/spec/benchmark_spec.rb
@@ -2,34 +2,36 @@ require_relative 'helper'
 require 'rack/test'
 require 'app'
 
-describe 'benchmark the app' do
-  include Rack::Test::Methods
+if ENV['BENCH']
+  describe 'benchmark the app' do
+    include Rack::Test::Methods
 
-  let(:app) { Sinatra::Application }
+    let(:app) { Sinatra::Application }
 
-  bench_performance_constant 'latest' do
-    100.times do
-      get '/latest'
+    bench_performance_constant 'latest' do
+      100.times do
+        get '/latest'
+      end
     end
-  end
 
-  bench_performance_constant 'latest base' do
-    100.times do
-      get '/latest?base=USD'
+    bench_performance_constant 'latest base' do
+      100.times do
+        get '/latest?base=USD'
+      end
     end
-  end
 
-  bench_performance_constant 'historical' do
-    100.times do
-      random_date = Date.today - rand(4000)
-      get "/#{random_date}"
+    bench_performance_constant 'historical' do
+      100.times do
+        random_date = Date.today - rand(4000)
+        get "/#{random_date}"
+      end
     end
-  end
 
-  bench_performance_constant 'historical base' do
-    100.times do
-      random_date = Date.today - rand(4000)
-      get "/#{random_date}?base=USD"
+    bench_performance_constant 'historical base' do
+      100.times do
+        random_date = Date.today - rand(4000)
+        get "/#{random_date}?base=USD"
+      end
     end
   end
 end
diff --git a/spec/helper.rb b/spec/helper.rb
index cb2658e..5230bd2 100644
--- a/spec/helper.rb
+++ b/spec/helper.rb
@@ -1,3 +1,3 @@
 require 'minitest/autorun'
-require 'minitest/benchmark'
+require 'minitest/benchmark' if ENV['BENCH']
 require 'minitest/pride'