diff --git a/Gemfile.lock b/Gemfile.lock
index 7250ee3..999e389 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,7 +3,7 @@ GEM
   specs:
     conventional-changelog (1.3.0)
     diff-lcs (1.3)
-    rack (2.0.7)
+    rack (2.2.3.1)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rake (12.3.3)
@@ -35,4 +35,4 @@ DEPENDENCIES
   rspec-its (~> 1.2)
 
 BUNDLED WITH
-   2.0.2
+   2.1.4