diff --git a/Gemfile.lock b/Gemfile.lock
index cd181e3..06740fe 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,7 +52,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    rack (2.0.7)
+    rack (3.0.7)
     rake (0.9.6)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)