diff --git a/Gemfile b/Gemfile
index 51d53c6724..63dc332902 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,6 +13,6 @@ gem 'rubocop', '1.75.4'
 gem 'rubocop-minitest', '0.38.1'
 gem 'rubocop-rake', '0.7.1'
 gem 'simplecov', '0.22.0'
-gem 'test-unit', '3.6.9'
+gem 'test-unit', '3.7.0'
 gem 'timecop', '0.9.10'
 gem 'yard', '0.9.37'
diff --git a/Gemfile.lock b/Gemfile.lock
index 1fa3cec09a..16b6bc6a02 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,7 +60,7 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.13.1)
     simplecov_json_formatter (0.1.4)
-    test-unit (3.6.9)
+    test-unit (3.7.0)
       power_assert
     timecop (0.9.10)
     unicode-display_width (3.1.4)
@@ -82,7 +82,7 @@ DEPENDENCIES
   rubocop-minitest (= 0.38.1)
   rubocop-rake (= 0.7.1)
   simplecov (= 0.22.0)
-  test-unit (= 3.6.9)
+  test-unit (= 3.7.0)
   timecop (= 0.9.10)
   yard (= 0.9.37)