diff --git a/Gemfile.lock b/Gemfile.lock
index 595c024..37cef4b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -126,7 +126,7 @@ GEM
     public_suffix (4.0.3)
     puma (3.12.4)
     puma (3.12.4-java)
-    rack (2.1.1)
+    rack (2.2.6.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.4.1)