diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 61e7fbdc..4cf4f2d9 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2021-03-18 03:26:00 UTC using RuboCop version 0.89.1.
+# on 2021-03-21 03:46:53 UTC using RuboCop version 1.11.0.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -15,7 +15,18 @@ Gemspec/OrderedDependencies:
     - 'paper_trail.gemspec'
 
 # Offense count: 4
-# Configuration parameters: IgnoredMethods.
+# Cop supports --auto-correct.
+# Configuration parameters: AllowedMethods.
+# AllowedMethods: instance_of?, kind_of?, is_a?, eql?, respond_to?, equal?
+Lint/RedundantSafeNavigation:
+  Exclude:
+    - 'lib/paper_trail/events/base.rb'
+    - 'lib/paper_trail/queries/versions/where_object_changes.rb'
+    - 'lib/paper_trail/queries/versions/where_object_changes_from.rb'
+    - 'lib/paper_trail/version_concern.rb'
+
+# Offense count: 5
+# Configuration parameters: IgnoredMethods, CountRepeatedAttributes.
 Metrics/AbcSize:
   Max: 19 # Goal: the default (17?)
 
@@ -36,6 +47,26 @@ Naming/MemoizedInstanceVariableName:
   Exclude:
     - 'lib/paper_trail/model_config.rb'
 
+# Offense count: 1
+# Configuration parameters: EnforcedStyle, CheckMethodNames, CheckSymbols, AllowedIdentifiers.
+# SupportedStyles: snake_case, normalcase, non_integer
+# AllowedIdentifiers: capture3, iso8601, rfc1123_date, rfc822, rfc2822, rfc3339
+Naming/VariableNumber:
+  Exclude:
+    - 'spec/dummy_app/app/models/person.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Performance/BlockGivenWithExplicitBlock:
+  Exclude:
+    - 'lib/paper_trail.rb'
+
+# Offense count: 1
+# Configuration parameters: MinSize.
+Performance/CollectionLiteralInLoop:
+  Exclude:
+    - 'spec/models/version_spec.rb'
+
 # Offense count: 115
 # Configuration parameters: Prefixes.
 # Prefixes: when, with, without
@@ -62,10 +93,6 @@ Rails/ApplicationController:
   Exclude:
     - 'spec/dummy_app/app/controllers/test_controller.rb'
 
-# We want this, but not until we drop support for ruby 2.4
-Style/HashTransformKeys:
-  Enabled: false
-
 # Offense count: 56
 # Cop supports --auto-correct.
 Rails/ApplicationRecord:
@@ -122,7 +149,11 @@ Rails/WhereNot:
   Exclude:
     - 'lib/paper_trail/version_concern.rb'
 
-# We want this, but not until we drop support for ruby 2.4
-Style/HashTransformValues:
+RSpec/FilePath:
   Exclude:
-    - 'lib/paper_trail/events/destroy.rb'
+    - 'spec/paper_trail/model_spec.rb'
+    - 'spec/paper_trail/serializer_spec.rb'
+
+Style/ClassEqualityComparison:
+  Exclude:
+    - 'lib/paper_trail/attribute_serializers/attribute_serializer_factory.rb'
diff --git a/lib/paper_trail/events/destroy.rb b/lib/paper_trail/events/destroy.rb
index 1b9359a0..236a10fc 100644
--- a/lib/paper_trail/events/destroy.rb
+++ b/lib/paper_trail/events/destroy.rb
@@ -35,7 +35,7 @@ module PaperTrail
       #
       # @override
       def changes_in_latest_version
-        @record.attributes.map { |attr, value| [attr, [value, nil]] }.to_h
+        @record.attributes.transform_values { |value| [value, nil] }
       end
     end
   end
diff --git a/paper_trail.gemspec b/paper_trail.gemspec
index a8d517b7..c67c5aa0 100644
--- a/paper_trail.gemspec
+++ b/paper_trail.gemspec
@@ -65,11 +65,11 @@ has been destroyed.
 
   s.add_development_dependency "rake", "~> 13.0"
   s.add_development_dependency "rspec-rails", "~> 4.0"
-  s.add_development_dependency "rubocop", "~> 0.89.1"
-  s.add_development_dependency "rubocop-rails", "~> 2.8"
+  s.add_development_dependency "rubocop", "~> 1.11.0"
+  s.add_development_dependency "rubocop-rails", "~> 2.9.1"
   s.add_development_dependency "rubocop-packaging", "~> 0.5.1"
-  s.add_development_dependency "rubocop-performance", "~> 1.7.1"
-  s.add_development_dependency "rubocop-rspec", "~> 1.42.0"
+  s.add_development_dependency "rubocop-performance", "~> 1.10.1"
+  s.add_development_dependency "rubocop-rspec", "~> 2.2.0"
 
   # ## Database Adapters
   #
diff --git a/spec/paper_trail/serializer_spec.rb b/spec/paper_trail/serializer_spec.rb
index 6ad34b1f..3ee71366 100644
--- a/spec/paper_trail/serializer_spec.rb
+++ b/spec/paper_trail/serializer_spec.rb
@@ -69,7 +69,7 @@ RSpec.describe(PaperTrail, versioning: true) do
       original_attributes = PaperTrail::Events::Base.
         new(customer, false).
         send(:nonskipped_attributes_before_change, false).
-        reject { |_k, v| v.nil? }
+        compact
       customer.update(name: "Some more text.")
       expect(customer.versions.length).to(eq(2))
       expect(customer.versions[0].reify).to(be_nil)
diff --git a/spec/paper_trail/serializers/custom_yaml_serializer_spec.rb b/spec/paper_trail/serializers/custom_yaml_serializer_spec.rb
index fd2c5e30..2a14a329 100644
--- a/spec/paper_trail/serializers/custom_yaml_serializer_spec.rb
+++ b/spec/paper_trail/serializers/custom_yaml_serializer_spec.rb
@@ -15,7 +15,7 @@ module CustomYamlSerializer
   end
 
   def self.dump(object)
-    object.is_a?(Hash) ? super(object.reject { |_k, v| v.nil? }) : super
+    object.is_a?(Hash) ? super(object.compact) : super
   end
 end
 
@@ -40,7 +40,7 @@ RSpec.describe CustomYamlSerializer do
   describe ".dump" do
     it("serializes Ruby to YAML, removing pairs with nil values") do
       expect(described_class.dump(word_hash)).to eq(
-        word_hash.reject { |_k, v| v.nil? }.to_yaml
+        word_hash.compact.to_yaml
       )
     end
   end
diff --git a/spec/support/custom_json_serializer.rb b/spec/support/custom_json_serializer.rb
index 8b7b1e5b..33206b77 100644
--- a/spec/support/custom_json_serializer.rb
+++ b/spec/support/custom_json_serializer.rb
@@ -10,6 +10,6 @@ module CustomJsonSerializer
   end
 
   def self.dump(object)
-    object.is_a?(Hash) ? super(object.reject { |_k, v| v.nil? }) : super
+    object.is_a?(Hash) ? super(object.compact) : super
   end
 end