diff --git a/Gemfile.lock b/Gemfile.lock
index 7fccd41..b2560a8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,7 +27,7 @@ GEM
       ref (~> 2.0)
       slow_enumerator_tools (~> 1.0)
     public_suffix (3.0.1)
-    rack (2.0.3)
+    rack (2.2.3)
     ref (2.0.0)
     slow_enumerator_tools (1.1.0)