diff --git a/Gemfile.lock b/Gemfile.lock
index cbf25a7..114beb0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,13 +17,14 @@ GEM
       rake (>= 0.9.2.2)
     method_source (1.0.0)
     minitest (5.19.0)
+    mocktail (0.0.1)
     parallel (1.23.0)
     parser (3.2.2.3)
       ast (~> 2.4.1)
       racc
     racc (1.7.1)
     rainbow (3.1.1)
-    rake (13.0.6)
+    rake (13.1.0)
     regexp_parser (2.8.1)
     rexml (3.2.6)
     rubocop (1.52.1)
@@ -55,12 +56,12 @@ GEM
 
 PLATFORMS
   arm64-darwin-22
-  ruby
   x86_64-linux
 
 DEPENDENCIES
   m
   minitest
+  mocktail
   rake
   standard
   standard-performance!