diff --git a/Gemfile.lock b/Gemfile.lock
index 8705f40..81241b1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -111,7 +111,7 @@ GEM
       pry (~> 0.10)
     public_suffix (4.0.1)
     racc (1.5.2)
-    rack (2.1.4)
+    rack (2.1.4.3)
     rack-protection (2.0.2)
       rack
     rack-test (1.1.0)