diff --git a/Gemfile.lock b/Gemfile.lock
index 10c5618..b474c70 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -67,7 +67,7 @@ GEM
     pry (0.14.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    rack (2.2.4)
+    rack (3.0.9.1)
     rainbow (3.1.1)
     rchardet (1.8.0)
     regexp_parser (2.5.0)