diff --git a/Gemfile.lock b/Gemfile.lock
index 7e219c8..89f6b4a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -139,7 +139,7 @@ GEM
     pg (1.2.3)
     public_suffix (4.0.5)
     puma (3.12.6)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.4.3)