diff --git a/Gemfile.lock b/Gemfile.lock
index c1f316b..b3ce74e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -285,7 +285,7 @@ GEM
     pg (0.21.0)
     powerpack (0.1.1)
     puma (3.9.1)
-    rack (2.2.2)
+    rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.1.2)