diff --git a/Gemfile.lock b/Gemfile.lock
index 912b073..f4ab8a2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -133,7 +133,7 @@ GEM
     plist (3.3.0)
     proxifier (1.0.3)
     public_suffix (3.0.1)
-    rack (2.0.8)
+    rack (2.2.3)
     retryable (2.0.4)
     rspec (3.7.0)
       rspec-core (~> 3.7.0)