diff --git a/examples/simple_rails_api/Gemfile.lock b/examples/simple_rails_api/Gemfile.lock
index 5aa3eb6..1a027cb 100644
--- a/examples/simple_rails_api/Gemfile.lock
+++ b/examples/simple_rails_api/Gemfile.lock
@@ -81,13 +81,15 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (1.0.0)
-    mimemagic (0.3.5)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
-    mini_portile2 (2.5.0)
+    mini_portile2 (2.5.1)
     minitest (5.14.2)
     msgpack (1.3.3)
     nio4r (2.5.4)
-    nokogiri (1.11.1)
+    nokogiri (1.11.5)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
     pry (0.13.1)