diff --git a/Gemfile.lock b/Gemfile.lock
index 8c5ee6d..d8defd6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -16,7 +16,7 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
       zeitwerk (~> 2.2, >= 2.2.2)
-    appraisal (2.2.0)
+    appraisal (2.3.0)
       bundler
       rake
       thor (>= 0.14.0)