diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 77826348..aa55515a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,7 +14,7 @@ jobs:
       matrix:
         # Due to https://github.com/actions/runner/issues/849, we have to use
         # quotes for '3.0' -- without quotes, CI sees '3' and runs the latest.
-        ruby: [2.5, 2.6, 2.7, '3.0', 3.1, 3.2, jruby, truffleruby-head]
+        ruby: [2.5, 2.6, 2.7, '3.0', 3.1, 3.2, 3.3, jruby, truffleruby-head]
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
@@ -24,6 +24,10 @@ jobs:
     - name: Set bundler environment variables
       run: |
         echo "BUNDLE_WITH=checks:docs" >> $GITHUB_ENV
+      if: matrix.ruby == 3.3
+    - name: Set bundler environment variables
+      run: |
+        echo "BUNDLE_WITH=dokaz" >> $GITHUB_ENV
       if: matrix.ruby == 3.2
 
     # Use 'bundler-cache: true' instead of actions/cache as advised:
@@ -41,18 +45,19 @@ jobs:
         fail_ci_if_error: true # optional (default = false)
         token: ${{ secrets.CODECOV_TOKEN }}
         verbose: true # optional (default = false)
-      if: matrix.ruby == 3.2
+      if: matrix.ruby == 3.3
 
     - run: bundle exec rubocop
-      if: matrix.ruby == 3.2
+      if: matrix.ruby == 3.3
 
-    - run: |
-        bundle exec yard doctest
-        bundle exec dokaz
-      if: matrix.ruby == 3.2
+    - run: bundle exec yard doctest
+      if: matrix.ruby == 3.3
+
+    - run: bundle exec dokaz
+      if: matrix.ruby == 3.2 # Does not yet work on Ruby 3.3+: https://github.com/zverok/dokaz/issues/3
 
-    - name: Run benchmarks on Ruby 2.7 or 3.2
+    - name: Run benchmarks on Ruby 2.7 or 3.3
       run: |
         BUNDLE_GEMFILE=benchmarks/Gemfile bundle install --jobs 4 --retry 3
         BUNDLE_GEMFILE=benchmarks/Gemfile bundle exec ruby benchmarks/benchmarks.rb
-      if: matrix.ruby == '2.7' || matrix.ruby == '3.2'
+      if: matrix.ruby == '2.7' || matrix.ruby == '3.3'
diff --git a/.ruby-version b/.ruby-version
index be94e6f5..47725433 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.2.2
+3.3.2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e325dba3..56e4912d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,8 @@ _No breaking changes!_
 
 **Project enhancements:**
 
+- Updated official test coverage to support Ruby 3.3 [[#335](https://github.com/panorama-ed/memo_wise/pull/335)]
+
 ## [v1.9.0](https://github.com/panorama-ed/memo_wise/compare/v1.8.0...v1.9.0)
 
 **Gem enhancements:**
@@ -70,7 +72,7 @@ _No breaking changes!_
 
 **Project enhancements:**
 
-- Update official test coverage to support Ruby 3.1 [[#263](https://github.com/panorama-ed/memo_wise/pull/263)]
+- Updated official test coverage to support Ruby 3.1 [[#263](https://github.com/panorama-ed/memo_wise/pull/263)]
 
 ## [v1.5.0](https://github.com/panorama-ed/memo_wise/compare/v1.4.0...v1.5.0) - 2021-12-17
 
diff --git a/Gemfile b/Gemfile
index f3ad4408..6a2c9489 100644
--- a/Gemfile
+++ b/Gemfile
@@ -24,13 +24,17 @@ end
 
 # Excluded from CI except on latest MRI Ruby, to reduce compatibility burden
 group :docs, optional: true do
-  gem "dokaz", "~> 0.0.5"
   gem "redcarpet", "~> 3.6"
   gem "webrick", "~> 1.8"
   gem "yard", "~> 0.9"
   gem "yard-doctest", "~> 0.1"
 end
 
+# Excluded from CI except on the latest Ruby version that supports dokaz
+group :dokaz, optional: true do
+  gem "dokaz", "~> 0.0.5"
+end
+
 # Optional, only used locally to release to rubygems.org
 group :release, optional: true do
   gem "rake"
diff --git a/Gemfile.lock b/Gemfile.lock
index a4601527..8ad144ae 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,12 +1,12 @@
 GIT
   remote: https://github.com/panorama-ed/panolint-ruby.git
-  revision: a93988ea554177cf0ec9ef636c442f9d3af49a10
+  revision: f3fde1ecdaec4090c200346b4aa8c35c0ad13135
   branch: main
   specs:
     panolint-ruby (0)
-      rubocop (= 1.51.0)
-      rubocop-performance (= 1.18.0)
-      rubocop-rspec (= 2.22.0)
+      rubocop (= 1.64.1)
+      rubocop-performance (= 1.20.2)
+      rubocop-rspec (= 2.29.2)
 
 PATH
   remote: .
@@ -24,11 +24,14 @@ GEM
       ansi
       rouge (~> 4)
       slop (~> 3)
-    json (2.6.3)
+    json (2.7.2)
+    language_server-protocol (3.17.0.3)
     minitest (5.18.0)
-    parallel (1.23.0)
-    parser (3.2.2.1)
+    parallel (1.24.0)
+    parser (3.3.2.0)
       ast (~> 2.4.1)
+      racc
+    racc (1.8.0)
     rainbow (3.1.1)
     rake (13.1.0)
     redcarpet (3.6.0)
@@ -49,29 +52,33 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
     rspec-support (3.13.1)
-    rubocop (1.51.0)
+    rubocop (1.64.1)
       json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
-      parser (>= 3.2.0.0)
+      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 (>= 1.28.0, < 2.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.28.1)
-      parser (>= 3.2.1.0)
-    rubocop-capybara (2.18.0)
+    rubocop-ast (1.31.3)
+      parser (>= 3.3.1.0)
+    rubocop-capybara (2.20.0)
       rubocop (~> 1.41)
-    rubocop-factory_bot (2.23.1)
-      rubocop (~> 1.33)
-    rubocop-performance (1.18.0)
-      rubocop (>= 1.7.0, < 2.0)
-      rubocop-ast (>= 0.4.0)
-    rubocop-rspec (2.22.0)
-      rubocop (~> 1.33)
+    rubocop-factory_bot (2.25.1)
+      rubocop (~> 1.41)
+    rubocop-performance (1.20.2)
+      rubocop (>= 1.48.1, < 2.0)
+      rubocop-ast (>= 1.30.0, < 2.0)
+    rubocop-rspec (2.29.2)
+      rubocop (~> 1.40)
       rubocop-capybara (~> 2.17)
       rubocop-factory_bot (~> 2.22)
+      rubocop-rspec_rails (~> 2.28)
+    rubocop-rspec_rails (2.28.3)
+      rubocop (~> 1.40)
     ruby-progressbar (1.13.0)
     simplecov (0.22.0)
       docile (~> 1.1)
diff --git a/README.md b/README.md
index 8096f1ac..0037d186 100644
--- a/README.md
+++ b/README.md
@@ -114,19 +114,19 @@ For more usage details, see our detailed [documentation](#documentation).
 
 Benchmarks are run in GitHub Actions, and the tables below are updated with every code change. **Values >1.00x represent how much _slower_ each gem’s memoized value retrieval is than the latest commit of `MemoWise`**, according to [`benchmark-ips`](https://github.com/evanphx/benchmark-ips) (2.11.0).
 
-Results using Ruby 3.2.2:
+Results using Ruby 3.3.2:
 
 |Method arguments|`Dry::Core`\* (1.0.1)|`Memery` (1.5.0)|
 |--|--|--|
-|`()` (none)|0.66x|3.54x|
-|`(a)`|1.48x|8.49x|
-|`(a, b)`|1.18x|6.52x|
-|`(a:)`|1.53x|13.57x|
-|`(a:, b:)`|1.27x|10.56x|
-|`(a, b:)`|1.26x|10.44x|
-|`(a, *args)`|0.78x|1.60x|
-|`(a:, **kwargs)`|0.77x|2.12x|
-|`(a, *args, b:, **kwargs)`|0.69x|1.40x|
+|`()` (none)|0.60x|3.17x|
+|`(a)`|1.01x|7.94x|
+|`(a, b)`|0.85x|6.38x|
+|`(a:)`|1.00x|11.78x|
+|`(a:, b:)`|0.88x|9.67x|
+|`(a, b:)`|0.83x|9.44x|
+|`(a, *args)`|0.67x|1.45x|
+|`(a:, **kwargs)`|0.68x|1.88x|
+|`(a, *args, b:, **kwargs)`|0.64x|1.29x|
 
 \* `Dry::Core`
 [may cause incorrect behavior caused by hash collisions](https://github.com/dry-rb/dry-core/issues/63).
@@ -180,7 +180,7 @@ versions:
 
 We maintain API documentation using [YARD](https://yardoc.org/), which is
 published automatically at
-[RubyDoc.info](https://rubydoc.info/gems/memo_wise). 
+[RubyDoc.info](https://rubydoc.info/gems/memo_wise).
 
 To generate documentation locally or run documentation tests,
 first install the `docs` dependencies (e.g. `yard`) as follows:
diff --git a/benchmarks/benchmarks.rb b/benchmarks/benchmarks.rb
index 073b21b6..37518223 100644
--- a/benchmarks/benchmarks.rb
+++ b/benchmarks/benchmarks.rb
@@ -82,7 +82,7 @@ def benchmark_name
 
 # Use metaprogramming to ensure that each class is created in exactly the
 # the same way.
-BENCHMARK_GEMS.each do |benchmark_gem|
+BENCHMARK_GEMS.each do |benchmark_gem| # rubocop:disable Metrics/BlockLength
   eval <<~HEREDOC, binding, __FILE__, __LINE__ + 1 # rubocop:disable Security/Eval
     class #{benchmark_gem.klass}Example
       #{benchmark_gem.activation_code}
diff --git a/lib/memo_wise.rb b/lib/memo_wise.rb
index dace3d61..47248b8d 100644
--- a/lib/memo_wise.rb
+++ b/lib/memo_wise.rb
@@ -1,7 +1,6 @@
 # frozen_string_literal: true
 
-# Disable RuboCop here because Ruby < 3.2 does not load `set` by default.
-require "set" # rubocop:disable Lint/RedundantRequireStatement
+require "set" # Ruby < 3.2 does not load `set` by default.
 
 require "memo_wise/internal_api"
 require "memo_wise/version"
@@ -31,12 +30,12 @@ module MemoWise
   # [calling the original](https://medium.com/@jeremy_96642/ruby-method-auditing-using-module-prepend-4f4e69aacd95)
   # constructor.
   #
-  # - **Q:** Why is [Module#prepend](https://ruby-doc.org/3.2.2/Module.html#method-i-prepend)
+  # - **Q:** Why is [Module#prepend](https://ruby-doc.org/3.3.1/Module.html#method-i-prepend)
   #          important here
   #          ([more info](https://medium.com/@leo_hetsch/ruby-modules-include-vs-prepend-vs-extend-f09837a5b073))?
   # - **A:** To set up *mutable state* inside the instance, even if the original
   #          constructor will then call
-  #          [Object#freeze](https://ruby-doc.org/3.2.2/Object.html#method-i-freeze).
+  #          [Object#freeze](https://ruby-doc.org/3.3.1/Object.html#method-i-freeze).
   #
   # This approach supports memoization on frozen (immutable) objects -- for
   # example, classes created by the
@@ -101,7 +100,7 @@ def inherited(subclass)
   # @param target [Class]
   #   The `Class` into to prepend the MemoWise methods e.g. `memo_wise`
   #
-  # @see https://ruby-doc.org/3.2.2/Module.html#method-i-prepend
+  # @see https://ruby-doc.org/3.3.1/Module.html#method-i-prepend
   #
   # @example
   #   class Example
@@ -116,7 +115,7 @@ class << target
       #
       # This is necessary in addition to the `#initialize` method definition
       # above because
-      # [`Class#allocate`](https://ruby-doc.org/3.2.2/Class.html#method-i-allocate)
+      # [`Class#allocate`](https://ruby-doc.org/3.3.1/Class.html#method-i-allocate)
       # bypasses `#initialize`, and when it's used (e.g.,
       # [in ActiveRecord](https://github.com/rails/rails/blob/a395c3a6af1e079740e7a28994d77c8baadd2a9d/activerecord/lib/active_record/persistence.rb#L411))
       # we still need to be able to access MemoWise's instance variable. Despite
@@ -268,7 +267,7 @@ def #{method_name}(#{MemoWise::InternalAPI.args_str(method)})
         )
       end
 
-      # Override [Module#instance_method](https://ruby-doc.org/3.2.2/Module.html#method-i-instance_method)
+      # Override [Module#instance_method](https://ruby-doc.org/3.3.1/Module.html#method-i-instance_method)
       # to proxy the original `UnboundMethod#parameters` results. We want the
       # parameters to reflect the original method in order to support callers
       # who want to use Ruby reflection to process the method parameters,
diff --git a/spec/dokaz_helpers.rb b/spec/dokaz_helpers.rb
index 67ad7e44..76f36e74 100644
--- a/spec/dokaz_helpers.rb
+++ b/spec/dokaz_helpers.rb
@@ -5,6 +5,6 @@
 require "memo_wise"
 
 # Enable the example RSpec `after` call in README.md to execute successfully
-def after(scope, &)
+def after(scope, &block)
   # Do nothing
 end
diff --git a/spec/memo_wise_spec.rb b/spec/memo_wise_spec.rb
index 2a3f4b90..e9f6ded2 100644
--- a/spec/memo_wise_spec.rb
+++ b/spec/memo_wise_spec.rb
@@ -134,11 +134,11 @@
         expect(target.proc_method_counter).to eq(1)
       end
 
-      it "will not memoize methods with implicit block arguments" do
+      it "does not memoize methods with implicit block arguments" do
         expect { target.implicit_block_method }.to raise_error(LocalJumpError)
       end
 
-      it "will not memoize methods with explicit block arguments" do
+      it "does not memoize methods with explicit block arguments" do
         expect { target.explicit_block_method { nil } }.to raise_error(LocalJumpError)
       end
     end
@@ -153,7 +153,7 @@
 
             # Now confirm our non-memoized method is not memoized.
             expect(Array.new(4) { non_memoized.no_args }).to all eq("#{non_memoized_name}_no_args")
-            expect(non_memoized.send("#{non_memoized_name}_no_args_counter")).to eq(4)
+            expect(non_memoized.send(:"#{non_memoized_name}_no_args_counter")).to eq(4)
           end
         end
 
@@ -167,7 +167,7 @@
             expect(Array.new(4) { non_memoized.with_one_positional_arg(1) }).
               to all eq("#{non_memoized_name}_with_one_positional_arg: a=1")
 
-            expect(non_memoized.send("#{non_memoized_name}_one_positional_arg_counter")).to eq(4)
+            expect(non_memoized.send(:"#{non_memoized_name}_one_positional_arg_counter")).to eq(4)
           end
         end
 
@@ -181,7 +181,7 @@
             expect(Array.new(4) { non_memoized.with_positional_args(1, 2) }).
               to all eq("#{non_memoized_name}_with_positional_args: a=1, b=2")
 
-            expect(non_memoized.send("#{non_memoized_name}_positional_args_counter")).to eq(4)
+            expect(non_memoized.send(:"#{non_memoized_name}_positional_args_counter")).to eq(4)
           end
         end
       end
@@ -884,8 +884,8 @@ def no_args_counter
         end
 
         it "doesn't define #inherited" do
-          expect(klass).to be_respond_to(:inherited)
-          expect(klass.new).to_not be_respond_to(:inherited)
+          expect(klass).to respond_to(:inherited)
+          expect(klass.new).to_not respond_to(:inherited)
         end
       end
 
@@ -921,8 +921,8 @@ def no_args_counter
         end
 
         it "doesn't define #inherited" do
-          expect(klass).to be_respond_to(:inherited)
-          expect(klass.new).to_not be_respond_to(:inherited)
+          expect(klass).to respond_to(:inherited)
+          expect(klass.new).to_not respond_to(:inherited)
         end
       end
 
@@ -960,8 +960,8 @@ def no_args_counter
         end
 
         it "doesn't define #inherited" do
-          expect(klass).to be_respond_to(:inherited)
-          expect(klass.new).to_not be_respond_to(:inherited)
+          expect(klass).to respond_to(:inherited)
+          expect(klass.new).to_not respond_to(:inherited)
         end
       end
     end
diff --git a/spec/support/define_methods_for_testing_memo_wise.rb b/spec/support/define_methods_for_testing_memo_wise.rb
index 9da9c1ea..0e3d6560 100644
--- a/spec/support/define_methods_for_testing_memo_wise.rb
+++ b/spec/support/define_methods_for_testing_memo_wise.rb
@@ -26,7 +26,7 @@ def self.define_methods_for_testing_memo_wise(target:, via:)
 
     # :nocov:
     raise ArgumentError, "Not a Class or Module: #{target.inspect}" unless target.is_a?(Module)
-    raise ArgumentError, "Unknown value for 'via': #{via}" unless %i[instance self_dot].include?(via) # rubocop:disable Layout/EmptyLineAfterGuardClause
+    raise ArgumentError, "Unknown value for 'via': #{via}" unless %i[instance self_dot].include?(via)
     # :nocov:
 
     self_prefix = via == :self_dot ? "self." : ""