diff --git a/Gemfile.lock b/Gemfile.lock
index 4eb59394a..86f810a54 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -472,7 +472,7 @@ GEM
       rspec-mocks (~> 3.13)
       rspec-support (~> 3.13)
     rspec-support (3.13.3)
-    rubocop (1.75.8)
+    rubocop (1.76.1)
       json (~> 2.3)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.1.0)
@@ -480,10 +480,10 @@ GEM
       parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 2.9.3, < 3.0)
-      rubocop-ast (>= 1.44.0, < 2.0)
+      rubocop-ast (>= 1.45.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 4.0)
-    rubocop-ast (1.44.1)
+    rubocop-ast (1.45.1)
       parser (>= 3.3.7.2)
       prism (~> 1.4)
     rubocop-capybara (2.22.1)
@@ -941,8 +941,8 @@ CHECKSUMS
   rspec-mocks (3.13.4) sha256=6bb158a0719c53d522104ed34c0777b884b2c9dc775ce64eaa10207df02ab993
   rspec-rails (8.0.0) sha256=977a508cd94d152db2068c6585470db5d0cd47eef56d5410b9531034fb9d97bf
   rspec-support (3.13.3) sha256=2a61e393f6e18b7228726e0c6869c5d5a1419d37206116c4d917d145276b3f43
-  rubocop (1.75.8) sha256=c80ab4286c5dcfc49d7ad1787cdba5569b63b58c96ee7afde4ec47a9c8a85be9
-  rubocop-ast (1.44.1) sha256=e3cc04203b2ef04f6d6cf5f85fe6d643f442b18cc3b23e3ada0ce5b6521b8e92
+  rubocop (1.76.1) sha256=e15a2d750794cf2157d2de8b1b403dfa71b8dc3957a22ae6043b1bdf21e7e0e7
+  rubocop-ast (1.45.1) sha256=94042e49adc17f187ba037b33f941ba7398fede77cdf4bffafba95190a473a3e
   rubocop-capybara (2.22.1) sha256=ced88caef23efea53f46e098ff352f8fc1068c649606ca75cb74650970f51c0c
   rubocop-factory_bot (2.27.1) sha256=9d744b5916778c1848e5fe6777cc69855bd96548853554ec239ba9961b8573fe
   rubocop-performance (1.25.0) sha256=6f7d03568a770054117a78d0a8e191cefeffb703b382871ca7743831b1a52ec1
diff --git a/app/controllers/concerns/redirect_behavior.rb b/app/controllers/concerns/redirect_behavior.rb
index 072948c31..c10b9886e 100644
--- a/app/controllers/concerns/redirect_behavior.rb
+++ b/app/controllers/concerns/redirect_behavior.rb
@@ -74,7 +74,7 @@ def redirect_to_user_feedback
 
   def redirect_to_unsolved_rfc(own: false)
     # Set a message that informs the user that their own RFC should be closed or help in another RFC is greatly appreciated.
-    flash[:notice] = I18n.t("exercises.editor.exercise_finished_redirect_to_#{own ? 'own_' : ''}rfc")
+    flash[:notice] = I18n.t("exercises.editor.exercise_finished_redirect_to_#{'own_' if own}rfc")
     flash.keep(:notice)
 
     # Increase counter 'times_featured' in rfc
diff --git a/app/controllers/external_users_controller.rb b/app/controllers/external_users_controller.rb
index 5fc2a1199..bc9e51fa0 100644
--- a/app/controllers/external_users_controller.rb
+++ b/app/controllers/external_users_controller.rb
@@ -60,7 +60,7 @@ def working_time_query(tag = nil)
                    filtered_submissions.created_at
           ) AS foo
       ) AS bar
-    #{tag.nil? ? '' : " JOIN exercise_tags et ON et.exercise_id = bar.exercise_id AND #{ExternalUser.sanitize_sql(['et.tag_id = ?', tag])}"}
+    #{" JOIN exercise_tags et ON et.exercise_id = bar.exercise_id AND #{ExternalUser.sanitize_sql(['et.tag_id = ?', tag])}" unless tag.nil?}
     GROUP BY contributor_id,
              bar.exercise_id;
     "
diff --git a/app/policies/application_policy.rb b/app/policies/application_policy.rb
index deaf1a596..7d0870111 100644
--- a/app/policies/application_policy.rb
+++ b/app/policies/application_policy.rb
@@ -16,13 +16,13 @@ def author?
   end
   private :author?
 
-  def everyone
+  def everyone # rubocop:disable Naming/PredicateMethod
     # As the ApplicationController forces to have any authorization, `everyone` here means `every user logged in`
     true
   end
   private :everyone
 
-  def no_one
+  def no_one # rubocop:disable Naming/PredicateMethod
     false
   end
   private :no_one
diff --git a/app/views/execution_environments/statistics.html.slim b/app/views/execution_environments/statistics.html.slim
index 0266d88e9..e7053356e 100644
--- a/app/views/execution_environments/statistics.html.slim
+++ b/app/views/execution_environments/statistics.html.slim
@@ -26,7 +26,7 @@ h1 = @execution_environment
           td = us['average_score'].to_f.round(4)
           td = us['maximum_score'].to_f.round(2)
           td = us['stddev_score'].to_f.round(4)
-          td = (us['percent_correct'].to_f || 0).round(4)
+          td = us['percent_correct'].to_f.round(4)
           td = us['average_submission_count'].to_f.round(2)
           td = average_time
           td = stddev_time
diff --git a/lib/code_ocean/config.rb b/lib/code_ocean/config.rb
index 92e8b3134..513939836 100644
--- a/lib/code_ocean/config.rb
+++ b/lib/code_ocean/config.rb
@@ -5,7 +5,7 @@ class Config
     attr_reader :path, :read
 
     def initialize(filename, options = {})
-      @path = Rails.root.join('config', "#{filename}.yml#{options[:erb] ? '.erb' : ''}")
+      @path = Rails.root.join('config', "#{filename}.yml#{'.erb' if options[:erb]}")
       @read = parse(options)
     end
 
diff --git a/lib/runner/strategy/null.rb b/lib/runner/strategy/null.rb
index 7b0d3ffb8..d07549d19 100644
--- a/lib/runner/strategy/null.rb
+++ b/lib/runner/strategy/null.rb
@@ -45,7 +45,7 @@ def self.available_images
 
   def self.config; end
 
-  def self.health
+  def self.health # rubocop:disable Naming/PredicateMethod
     true
   end