diff --git a/gemfiles/3.1/Gemfile.lock b/gemfiles/3.1/Gemfile.lock
index 82f2d4f6ce..521b1ce2d0 100644
--- a/gemfiles/3.1/Gemfile.lock
+++ b/gemfiles/3.1/Gemfile.lock
@@ -26,7 +26,7 @@ GEM
       logger
     ruby_memcheck (3.0.0)
       nokogiri
-    test-unit (3.6.4)
+    test-unit (3.6.7)
       power_assert
 
 PLATFORMS