diff --git a/Gemfile.lock b/Gemfile.lock
index 87aad05..c493c9e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,7 +22,7 @@ GEM
     nio4r (2.5.8)
     puma (6.0.2)
       nio4r (~> 2.0)
-    rack (2.2.5)
+    rack (2.2.6.3)
     rack-protection (3.0.5)
       rack
     ruby2_keywords (0.0.5)