diff --git a/Gemfile.lock b/Gemfile.lock
index 407eb66..9cbd890 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -73,7 +73,7 @@ GEM
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     pg (1.2.2)
-    rack (2.2.2)
+    rack (2.2.3.1)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.4.1)