diff --git a/.rubocop.yml b/.rubocop.yml
index 32497f9..b5b354f 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -5,10 +5,12 @@ require:
 AllCops:
   NewCops: enable
 
-RSpec/FilePath:
-  SpecSuffixOnly: true
+RSpec/MultipleExpectations:
+  Enabled: false
 RSpec/SpecFilePathFormat:
   Enabled: false
+RSpec/SpecFilePathSuffix:
+  Enabled: true
 
 Layout/DotPosition:
   EnforcedStyle: trailing
diff --git a/Gemfile b/Gemfile
index d2894a2..3c34a91 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,9 +1,13 @@
 source 'https://rubygems.org'
 ruby '3.3.0'
 
-gem 'rspec'
-gem 'rspec-github-actions-formatter'
+group :development do
+  gem 'rubocop'
+  gem 'rubocop-performance'
+  gem 'rubocop-rspec'
+end
 
-gem 'rubocop'
-gem 'rubocop-performance'
-gem 'rubocop-rspec'
+group :test do
+  gem 'rspec'
+  gem 'rspec-github-actions-formatter'
+end
diff --git a/Gemfile.lock b/Gemfile.lock
index 4844b79..9482407 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,56 +3,48 @@ GEM
   specs:
     ast (2.4.2)
     diff-lcs (1.5.1)
-    json (2.7.1)
+    json (2.7.2)
     language_server-protocol (3.17.0.3)
-    parallel (1.24.0)
-    parser (3.3.0.5)
+    parallel (1.26.3)
+    parser (3.3.5.0)
       ast (~> 2.4.1)
       racc
-    racc (1.7.3)
+    racc (1.8.1)
     rainbow (3.1.1)
-    regexp_parser (2.9.0)
-    rexml (3.2.6)
+    regexp_parser (2.9.2)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
       rspec-mocks (~> 3.13.0)
-    rspec-core (3.13.0)
+    rspec-core (3.13.2)
       rspec-support (~> 3.13.0)
-    rspec-expectations (3.13.0)
+    rspec-expectations (3.13.3)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
     rspec-github-actions-formatter (0.2.0)
-    rspec-mocks (3.13.0)
+    rspec-mocks (3.13.2)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
-    rspec-support (3.13.0)
-    rubocop (1.60.2)
+    rspec-support (3.13.1)
+    rubocop (1.67.0)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
       parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.8, < 3.0)
-      rexml (>= 3.2.5, < 4.0)
-      rubocop-ast (>= 1.30.0, < 2.0)
+      regexp_parser (>= 2.4, < 3.0)
+      rubocop-ast (>= 1.32.2, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.30.0)
-      parser (>= 3.2.1.0)
-    rubocop-capybara (2.20.0)
-      rubocop (~> 1.41)
-    rubocop-factory_bot (2.25.1)
-      rubocop (~> 1.41)
-    rubocop-performance (1.20.2)
+    rubocop-ast (1.32.3)
+      parser (>= 3.3.1.0)
+    rubocop-performance (1.22.1)
       rubocop (>= 1.48.1, < 2.0)
-      rubocop-ast (>= 1.30.0, < 2.0)
-    rubocop-rspec (2.26.1)
-      rubocop (~> 1.40)
-      rubocop-capybara (~> 2.17)
-      rubocop-factory_bot (~> 2.22)
+      rubocop-ast (>= 1.31.1, < 2.0)
+    rubocop-rspec (3.1.0)
+      rubocop (~> 1.61)
     ruby-progressbar (1.13.0)
-    unicode-display_width (2.5.0)
+    unicode-display_width (2.6.0)
 
 PLATFORMS
   ruby
diff --git a/spec/year_2015/day_11_spec.rb b/spec/year_2015/day_11_spec.rb
index 93638e7..9526d65 100644
--- a/spec/year_2015/day_11_spec.rb
+++ b/spec/year_2015/day_11_spec.rb
@@ -7,21 +7,21 @@
     end
 
     it 'checks first criteria (three straight letters)' do
-      { 'hijklmmn' => :to, 'abbceffg' => :not_to, 'abbcegjk' => :not_to }.each do |input, result|
-        expect(password_class.new(input)).send(result, be_first_criteria)
-      end
+      expect(password_class.new('hijklmmn')).to be_first_criteria
+      expect(password_class.new('abbceffg')).not_to be_first_criteria
+      expect(password_class.new('abbcegjk')).not_to be_first_criteria
     end
 
     it 'checks second criteria (no i/o/l)' do
-      { 'hijklmmn' => :not_to, 'abbceffg' => :to, 'abbcegjk' => :to }.each do |input, result|
-        expect(password_class.new(input)).send(result, be_second_criteria)
-      end
+      expect(password_class.new('hijklmmn')).not_to be_second_criteria
+      expect(password_class.new('abbceffg')).to be_second_criteria
+      expect(password_class.new('abbcegjk')).to be_second_criteria
     end
 
     it 'checks third criteria (two different pairs)' do
-      { 'hijklmmn' => :not_to, 'abbceffg' => :to, 'abbcegjk' => :not_to }.each do |input, result|
-        expect(password_class.new(input)).send(result, be_third_criteria)
-      end
+      expect(password_class.new('hijklmmn')).not_to be_third_criteria
+      expect(password_class.new('abbceffg')).to be_third_criteria
+      expect(password_class.new('abbcegjk')).not_to be_third_criteria
     end
 
     it 'gives a final result' do
diff --git a/year_2016/day_01.rb b/year_2016/day_01.rb
index 1f16add..bef06a3 100644
--- a/year_2016/day_01.rb
+++ b/year_2016/day_01.rb
@@ -7,7 +7,7 @@ def initialize(input_data, input_part_one = false)
       @version = input_part_one ? 1 : 2
       @direction = 0
       @position = [0, 0]
-      @visited = Set.new([0, 0])
+      @visited = Set.new(@position)
       do_all_moves(input_data)
     end