diff --git a/Gemfile.lock b/Gemfile.lock
index e94ad31..121ae11 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -83,7 +83,7 @@ GEM
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     puma (3.9.1)
-    rack (2.2.3)
+    rack (2.2.6.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.1.6)