diff --git a/Gemfile.lock b/Gemfile.lock
index 95a09a2..97f051e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -183,7 +183,7 @@ GEM
     pg (1.2.3)
     public_suffix (4.0.4)
     puma (3.12.4)
-    rack (2.2.2)
+    rack (2.2.6.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.4.2)