diff --git a/Gemfile b/Gemfile
index eb0cb27..96d340a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,5 +13,5 @@ end
 
 group :test do
   gem 'gauge-ruby', '~> 0.5.2'
-  gem 'test-unit', '~> 3.3.3'
+  gem 'test-unit', '~> 3.3.4'
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 0f985bf..e6dc1eb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,7 +60,7 @@ GEM
     parallel (1.17.0)
     parser (2.5.3.0)
       ast (~> 2.4.0)
-    power_assert (1.1.4)
+    power_assert (1.1.5)
     procto (0.0.3)
     rainbow (3.0.0)
     rake (12.3.2)
@@ -85,7 +85,7 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    test-unit (3.3.3)
+    test-unit (3.3.4)
       power_assert
     thread_safe (0.3.6)
     unf (0.1.4)
@@ -111,7 +111,7 @@ DEPENDENCIES
   rubocop (~> 0.68.1)
   simplecov (~> 0.17.0)
   simplecov-shield!
-  test-unit (~> 3.3.3)
+  test-unit (~> 3.3.4)
 
 BUNDLED WITH
    1.16.1