diff --git a/Gemfile.lock b/Gemfile.lock
index 3e1dc9a..779212a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     docile (1.4.0)
-    minitest (5.17.0)
+    minitest (5.18.0)
     prettier_print (1.2.0)
     rake (13.0.6)
     simplecov (0.22.0)