diff --git a/Gemfile.lock b/Gemfile.lock
index 9b008d0..5777cf7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
     pry (0.13.0)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    rack (2.2.3)
+    rack (2.2.6.4)
     redis (4.2.1)
     rspec (3.9.0)
       rspec-core (~> 3.9.0)