diff --git a/sample_app/Gemfile.lock b/sample_app/Gemfile.lock
index a15439c..494082b 100644
--- a/sample_app/Gemfile.lock
+++ b/sample_app/Gemfile.lock
@@ -127,14 +127,16 @@ GEM
     mimemagic (0.3.4)
     mini_magick (4.10.1)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.0)
     minitest (5.14.0)
     msgpack (1.3.3)
     nio4r (2.5.2)
-    nokogiri (1.10.9)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.1)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     public_suffix (4.0.3)
     puma (3.12.6)
+    racc (1.5.2)
     rack (2.2.3)
     rack-proxy (0.6.5)
       rack