diff --git a/Gemfile.lock b/Gemfile.lock
index 2359ab2..844a7af 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -135,7 +135,7 @@ GEM
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
     phonelib (0.6.41)
-    rack (2.1.2)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.4.1)