diff --git a/Gemfile.lock b/Gemfile.lock
index 3d8a0ce..41f2b47 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,9 +30,9 @@ GEM
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
     public_suffix (4.0.3)
-    rack (2.0.8)
-    rack-test (1.1.0)
-      rack (>= 1.0, < 3)
+    rack (3.0.9.1)
+    rack-test (2.1.0)
+      rack (>= 1.3)
     rake (10.5.0)
     regexp_parser (1.6.0)
     thread_safe (0.3.6)