diff --git a/Gemfile b/Gemfile
index f6b491f360..03b7fe5f82 100644
--- a/Gemfile
+++ b/Gemfile
@@ -100,7 +100,7 @@ gem 'roo', '~> 2.8.3'
 
 gem 'whenever', require: false
 
-gem 'test-unit', '~> 3.4'
+gem 'test-unit', '~> 3.5'
 
 gem 'coffee-rails', '~> 5.0.0'
 gem 'compass-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index 70d70e12b1..9203b5426a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -624,7 +624,7 @@ GEM
     stripe (5.38.0)
     temple (0.8.2)
     test-prof (1.0.7)
-    test-unit (3.4.8)
+    test-unit (3.5.0)
       power_assert
     thor (1.1.0)
     thread-local (1.1.0)
@@ -800,7 +800,7 @@ DEPENDENCIES
   stringex (~> 2.8.5)
   stripe
   test-prof
-  test-unit (~> 3.4)
+  test-unit (~> 3.5)
   timecop
   uglifier (>= 1.0.3)
   valid_email2