diff --git a/Gemfile b/Gemfile
index 5fa745ba..8052f6bb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -62,7 +62,7 @@ end
 group :development, :test do
   gem 'byebug'
   gem 'listen'
-  gem "rubocop", "~> 0.65", require: false
+  gem "rubocop", "~> 0.69", require: false
 end
 
 group :test do
@@ -76,7 +76,7 @@ group :test do
   gem "mocha", :require => false
   gem "minitest-stub-const"
 
-  gem "selenium-webdriver", "~> 2.53"
+  gem "selenium-webdriver", "~> 3.142"
 
   # uncomment to use the webkit option. This depends on Qt being installed
   # gem "capybara-webkit"
diff --git a/Gemfile.lock b/Gemfile.lock
index 4b77e528..321710dd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -68,8 +68,8 @@ GEM
     byebug (11.0.1)
     chartjs-ror (3.6.4)
       rails (>= 3.1)
-    childprocess (0.9.0)
-      ffi (~> 1.0, >= 1.0.11)
+    childprocess (1.0.1)
+      rake (< 13.0)
     climate_control (0.2.0)
     codeclimate-test-reporter (1.0.7)
       simplecov
@@ -144,11 +144,9 @@ GEM
       mime-types
       mimemagic (~> 0.3.0)
       terrapin (~> 0.6.0)
-    parallel (1.13.0)
-    parser (2.6.0.0)
+    parallel (1.17.0)
+    parser (2.6.3.0)
       ast (~> 2.4.0)
-    powerpack (0.1.2)
-    psych (3.1.0)
     puma (3.12.1)
     rack (2.0.7)
     rack-mini-profiler (1.0.2)
@@ -195,15 +193,13 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.8.0)
     rspec-support (3.8.0)
-    rubocop (0.65.0)
+    rubocop (0.69.0)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
-      parser (>= 2.5, != 2.5.1.1)
-      powerpack (~> 0.1)
-      psych (>= 3.1.0)
+      parser (>= 2.6)
       rainbow (>= 2.2.2, < 4.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (~> 1.4.0)
+      unicode-display_width (>= 1.4.0, < 1.7)
     ruby-progressbar (1.10.0)
     ruby_dep (1.5.0)
     rubyzip (1.2.2)
@@ -226,10 +222,9 @@ GEM
     sassc (2.0.0)
       ffi (~> 1.9.6)
       rake
-    selenium-webdriver (2.53.4)
-      childprocess (~> 0.5)
-      rubyzip (~> 1.0)
-      websocket (~> 1.0)
+    selenium-webdriver (3.142.3)
+      childprocess (>= 0.5, < 2.0)
+      rubyzip (~> 1.2, >= 1.2.2)
     simplecov (0.16.1)
       docile (~> 1.1)
       json (>= 1.8, < 3)
@@ -261,9 +256,8 @@ GEM
       thread_safe (~> 0.1)
     uglifier (4.1.20)
       execjs (>= 0.3.0, < 3)
-    unicode-display_width (1.4.1)
+    unicode-display_width (1.6.0)
     uniform_notifier (1.12.1)
-    websocket (1.2.8)
     websocket-driver (0.7.0)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.3)
@@ -304,10 +298,10 @@ DEPENDENCIES
   rails-dom-testing (~> 2.0.0)
   rails_autolink
   rspec-expectations
-  rubocop (~> 0.65)
+  rubocop (~> 0.69)
   sanitize (~> 5.0)
   sass-rails (~> 5.0)
-  selenium-webdriver (~> 2.53)
+  selenium-webdriver (~> 3.142)
   simplecov
   spring
   sqlite3
diff --git a/app/models/todos/undone_todos_query.rb b/app/models/todos/undone_todos_query.rb
index b4980870..c6d107ab 100644
--- a/app/models/todos/undone_todos_query.rb
+++ b/app/models/todos/undone_todos_query.rb
@@ -27,6 +27,7 @@ module Todos
 
       if params[:tag]
         tag = Tag.where(:name => params[:tag]).first
+        return [] if !tag
         not_done_todos = not_done_todos.joins(:taggings).where('taggings.tag_id = ?', tag.id)
       end
 
diff --git a/test/integration/feed_smoke_test.rb b/test/integration/feed_smoke_test.rb
index 6eb762bd..d172cdbd 100644
--- a/test/integration/feed_smoke_test.rb
+++ b/test/integration/feed_smoke_test.rb
@@ -84,6 +84,10 @@ class FeedSmokeTest < ActionDispatch::IntegrationTest
     assert_success "/todos.rss?token=#{ users(:admin_user).token }&done=7"
   end
   
+  def test_all_starred_active_actions_rss
+    assert_success "/todos.rss?token=#{ users(:admin_user).token }&tag=starred"
+  end
+
   def test_all_actions_completed_in_last_7_days_txt
     assert_success "/todos.txt?token=#{ users(:admin_user).token }&done=7"
   end