diff --git a/examples/simple/Gemfile.lock b/examples/simple/Gemfile.lock
index b652cba..899e8d1 100644
--- a/examples/simple/Gemfile.lock
+++ b/examples/simple/Gemfile.lock
@@ -82,12 +82,12 @@ GEM
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     mini_mime (1.0.1)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.4.0)
     minitest (5.11.3)
     multi_json (1.13.1)
     multipart-post (2.0.0)
-    nokogiri (1.8.5)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.10.10)
+      mini_portile2 (~> 2.4.0)
     public_suffix (3.0.3)
     rack (1.6.11)
     rack-test (0.6.3)