diff --git a/Gemfile b/Gemfile
index aaefa0a822..dea9b889e9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -115,7 +115,7 @@ gem 'roo', '~> 2.8.3'
 
 gem 'whenever', require: false
 
-gem 'test-unit', '~> 3.3'
+gem 'test-unit', '~> 3.4'
 
 gem 'coffee-rails', '~> 4.2.2'
 gem 'compass-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index 7e09549d40..6ca2073502 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -491,7 +491,7 @@ GEM
     paypal-sdk-merchant (1.117.2)
       paypal-sdk-core (~> 0.3.0)
     pg (0.21.0)
-    power_assert (1.2.0)
+    power_assert (2.0.0)
     pry (0.13.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
@@ -675,7 +675,7 @@ GEM
     stripe (5.29.0)
     temple (0.8.2)
     test-prof (0.11.3)
-    test-unit (3.3.9)
+    test-unit (3.4.0)
       power_assert
     test_after_commit (1.2.2)
       activerecord (>= 3.2, < 5.0)
@@ -825,7 +825,7 @@ DEPENDENCIES
   stringex (~> 2.8.5)
   stripe
   test-prof
-  test-unit (~> 3.3)
+  test-unit (~> 3.4)
   test_after_commit
   timecop
   uglifier (>= 1.0.3)