diff --git a/Gemfile.lock b/Gemfile.lock
index ad26b47..47c87e6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -61,7 +61,7 @@ GEM
     parser (2.7.0.2)
       ast (~> 2.4.0)
     public_suffix (4.0.3)
-    rack (2.1.2)
+    rack (2.1.4)
     rainbow (3.0.0)
     rake (13.0.1)
     rest-client (2.1.0)