diff --git a/presentations/join-the-ruby-line/todo/Gemfile.lock b/presentations/join-the-ruby-line/todo/Gemfile.lock
index 4e2ca11..39ed214 100644
--- a/presentations/join-the-ruby-line/todo/Gemfile.lock
+++ b/presentations/join-the-ruby-line/todo/Gemfile.lock
@@ -37,12 +37,12 @@ GEM
       rb-inotify (>= 0.9)
     method_source (0.8.2)
     mime-types (2.4.3)
-    mini_portile (0.6.2)
+    mini_portile2 (2.4.0)
     mongo (1.9.2)
       bson (~> 1.9.2)
     multi_json (1.10.1)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
+    nokogiri (1.10.10)
+      mini_portile2 (~> 2.4.0)
     opal (0.6.3)
       source_map
       sprockets