diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index d19a3bf..5849899 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -23,7 +23,7 @@ jobs:
       matrix:
         # Use `rbenv install -l` and only use the latest stable
         # version of ruby.
-        ruby-version: ["3.0.1", "3.0.6", "3.1.4", "3.2.2"]
+        ruby-version: ["3.2.8", "3.3.8", "3.4.2"]
 
     steps:
       - uses: actions/checkout@v3
@@ -33,9 +33,8 @@ jobs:
         run: date
       - name: Set up Ruby
         # To automatically get bug fixes and new Ruby versions for ruby/setup-ruby,
-        # change this to (see https://github.com/ruby/setup-ruby#versioning):
-        # uses: ruby/setup-ruby@v1
-        uses: ruby/setup-ruby@55283cc23133118229fd3f97f9336ee23a179fcf # v1.146.0
+        # see https://github.com/ruby/setup-ruby#versioning.
+        uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby-version }}
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically
diff --git a/.ruby-version b/.ruby-version
index cb2b00e..4d9d11c 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.0.1
+3.4.2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6eebb06..3b9bda6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+### 6.0.0 2025-07-09
+
+* Breaking changes
+  * Remove support for Ruby versions < 3.2.8.>
+  * Minimum Ruby version is now 3.2.8
+* Other Changes
+ * Update gems.
+ * Add 'observer' gem to dependencies.
+
 ### 5.0.13 2024-08-03
 
 * Changes
@@ -42,20 +51,24 @@
   * Ruby gem updates.
 
 ### 5.0.4
-* changes
+* Changes
   * Fix README.md erroneous references to WordResults#successful? (should be #success?)
   * Gem update.
+
 ### 5.0.3
-* changes
+* Changes
   * Update gems to patch CVE.
+
 ### 5.0.2
-* changes
+* Changes
   * Update gems.
+
 ### 5.0.1
-* bug fix
+* Bug Fix
   * Fix error loading support files in LittleWeasel.rb.
+
 ### 5.0.0
-* changes
+* Changes
   * Add spec coverage where lacking.
   * Remove unused DictionaryLoaderService and associated modules, specs, factories.
   * Refactor Locale, Language and Region modules to simplify.
@@ -63,27 +76,27 @@
     half-baked in 4.0.0.
   * DeprecateDictionaryCacheService#dictionary_exists? (plural); add typical DeprecateDictionaryCacheService#dictionary_exist? method in its palce.
   *  Update rake gem version to eliminate command injection vulerability.
-  * Change description and summary reflecting 4.0.0 changes.
+  * Change description and summary reflecting 4.0.0 Changes.
   * Various reek gem violation fixes/suppressions where reasonable.
   * Fix most rubocop violations.
 
 ### 4.0.0
-* enhancements
+* Enhancements
   * Complete overhaul; see README.md
 
 ### 3.0.4
-* enhancements
+* Enhancements
   * Relax requirements on ruby version to ~> 2.0.
 
 ### 3.0.3
 
-* enhancements
+* Enhancements
   * Add single_word_mode option (default: false); when single_word_mode: true, LittleWeasel::Checker.instance.exists? will return false, if more than one word is being checked for existance.
 
 ### 3.0.2
 
-* enhancements
+* Enhancements
   * None
 
-* bug fix
+* Bug Fix
   * Calling #exists? no longer alters the original input.
diff --git a/Gemfile.lock b/Gemfile.lock
index 4832db6..f2bf066 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,136 +1,150 @@
 PATH
   remote: .
   specs:
-    LittleWeasel (5.0.13)
+    LittleWeasel (6.0.0)
       activesupport (>= 7.0.8, < 8.0)
+      observer (~> 0.1)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (7.1.3.4)
+    activesupport (7.2.2.1)
       base64
+      benchmark (>= 0.3)
       bigdecimal
-      concurrent-ruby (~> 1.0, >= 1.0.2)
+      concurrent-ruby (~> 1.0, >= 1.3.1)
       connection_pool (>= 2.2.5)
       drb
       i18n (>= 1.6, < 2)
+      logger (>= 1.4.2)
       minitest (>= 5.1)
-      mutex_m
-      tzinfo (~> 2.0)
-    ast (2.4.2)
-    base64 (0.2.0)
-    benchmark-ips (2.13.0)
-    bigdecimal (3.1.8)
-    byebug (11.1.3)
+      securerandom (>= 0.3)
+      tzinfo (~> 2.0, >= 2.0.5)
+    ast (2.4.3)
+    base64 (0.3.0)
+    benchmark (0.4.1)
+    benchmark-ips (2.14.0)
+    bigdecimal (3.2.2)
+    byebug (12.0.0)
     coderay (1.1.3)
-    concurrent-ruby (1.3.3)
-    connection_pool (2.4.1)
-    diff-lcs (1.5.1)
+    concurrent-ruby (1.3.5)
+    connection_pool (2.5.3)
+    diff-lcs (1.6.2)
     docile (1.4.1)
-    drb (2.2.1)
-    dry-configurable (1.2.0)
-      dry-core (~> 1.0, < 2)
+    drb (2.2.3)
+    dry-configurable (1.3.0)
+      dry-core (~> 1.1)
       zeitwerk (~> 2.6)
-    dry-core (1.0.1)
+    dry-core (1.1.0)
       concurrent-ruby (~> 1.0)
+      logger
       zeitwerk (~> 2.6)
-    dry-inflector (1.1.0)
-    dry-initializer (3.1.1)
-    dry-logic (1.5.0)
+    dry-inflector (1.2.0)
+    dry-initializer (3.2.0)
+    dry-logic (1.6.0)
+      bigdecimal
       concurrent-ruby (~> 1.0)
-      dry-core (~> 1.0, < 2)
+      dry-core (~> 1.1)
       zeitwerk (~> 2.6)
-    dry-schema (1.13.4)
+    dry-schema (1.14.1)
       concurrent-ruby (~> 1.0)
       dry-configurable (~> 1.0, >= 1.0.1)
-      dry-core (~> 1.0, < 2)
-      dry-initializer (~> 3.0)
-      dry-logic (>= 1.4, < 2)
-      dry-types (>= 1.7, < 2)
+      dry-core (~> 1.1)
+      dry-initializer (~> 3.2)
+      dry-logic (~> 1.5)
+      dry-types (~> 1.8)
       zeitwerk (~> 2.6)
-    dry-types (1.7.2)
+    dry-types (1.8.3)
       bigdecimal (~> 3.0)
       concurrent-ruby (~> 1.0)
       dry-core (~> 1.0)
       dry-inflector (~> 1.0)
       dry-logic (~> 1.4)
       zeitwerk (~> 2.6)
-    factory_bot (6.4.6)
-      activesupport (>= 5.0.0)
-    i18n (1.14.5)
+    factory_bot (6.5.4)
+      activesupport (>= 6.1.0)
+    i18n (1.14.7)
       concurrent-ruby (~> 1.0)
-    json (2.7.2)
-    language_server-protocol (3.17.0.3)
+    json (2.12.2)
+    language_server-protocol (3.17.0.5)
+    lint_roller (1.1.0)
+    logger (1.7.0)
     method_source (1.1.0)
-    minitest (5.24.1)
-    mutex_m (0.2.0)
-    parallel (1.25.1)
-    parser (3.3.4.0)
+    minitest (5.25.5)
+    observer (0.1.2)
+    parallel (1.27.0)
+    parser (3.3.8.0)
       ast (~> 2.4.1)
       racc
-    pry (0.14.2)
+    prism (1.4.0)
+    pry (0.15.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    pry-byebug (3.10.1)
-      byebug (~> 11.0)
-      pry (>= 0.13, < 0.15)
+    pry-byebug (3.11.0)
+      byebug (~> 12.0)
+      pry (>= 0.13, < 0.16)
     racc (1.8.1)
     rainbow (3.1.1)
-    rake (13.2.1)
-    redcarpet (3.6.0)
-    reek (6.3.0)
-      dry-schema (~> 1.13.0)
+    rake (13.3.0)
+    redcarpet (3.6.1)
+    reek (6.5.0)
+      dry-schema (~> 1.13)
+      logger (~> 1.6)
       parser (~> 3.3.0)
       rainbow (>= 2.0, < 4.0)
       rexml (~> 3.1)
-    regexp_parser (2.9.2)
-    rexml (3.3.4)
-      strscan
-    rspec (3.13.0)
+    regexp_parser (2.10.0)
+    rexml (3.4.1)
+    rspec (3.13.1)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
       rspec-mocks (~> 3.13.0)
-    rspec-core (3.13.0)
+    rspec-core (3.13.5)
       rspec-support (~> 3.13.0)
-    rspec-expectations (3.13.1)
+    rspec-expectations (3.13.5)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
-    rspec-mocks (3.13.1)
+    rspec-mocks (3.13.5)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
-    rspec-support (3.13.1)
-    rubocop (1.65.1)
+    rspec-support (3.13.4)
+    rubocop (1.78.0)
       json (~> 2.3)
-      language_server-protocol (>= 3.17.0)
+      language_server-protocol (~> 3.17.0.2)
+      lint_roller (~> 1.1.0)
       parallel (~> 1.10)
       parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 2.4, < 3.0)
-      rexml (>= 3.2.5, < 4.0)
-      rubocop-ast (>= 1.31.1, < 2.0)
+      regexp_parser (>= 2.9.3, < 3.0)
+      rubocop-ast (>= 1.45.1, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.31.3)
-      parser (>= 3.3.1.0)
-    rubocop-performance (1.21.1)
-      rubocop (>= 1.48.1, < 2.0)
-      rubocop-ast (>= 1.31.1, < 2.0)
-    rubocop-rspec (3.0.3)
-      rubocop (~> 1.61)
+      unicode-display_width (>= 2.4.0, < 4.0)
+    rubocop-ast (1.45.1)
+      parser (>= 3.3.7.2)
+      prism (~> 1.4)
+    rubocop-performance (1.25.0)
+      lint_roller (~> 1.1)
+      rubocop (>= 1.75.0, < 2.0)
+      rubocop-ast (>= 1.38.0, < 2.0)
+    rubocop-rspec (3.6.0)
+      lint_roller (~> 1.1)
+      rubocop (~> 1.72, >= 1.72.1)
     ruby-progressbar (1.13.0)
+    securerandom (0.4.1)
     simplecov (0.22.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
       simplecov_json_formatter (~> 0.1)
-    simplecov-html (0.12.3)
+    simplecov-html (0.13.1)
     simplecov_json_formatter (0.1.4)
-    strscan (3.1.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    unicode-display_width (2.5.0)
-    webrick (1.8.1)
-    yard (0.9.36)
-    zeitwerk (2.6.17)
+    unicode-display_width (3.1.4)
+      unicode-emoji (~> 4.0, >= 4.0.4)
+    unicode-emoji (4.0.4)
+    webrick (1.9.1)
+    yard (0.9.37)
+    zeitwerk (2.7.3)
 
 PLATFORMS
   ruby
diff --git a/LittleWeasel.gemspec b/LittleWeasel.gemspec
index 0f9e230..2c386f7 100644
--- a/LittleWeasel.gemspec
+++ b/LittleWeasel.gemspec
@@ -19,7 +19,8 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ['lib']
 
-  spec.required_ruby_version = Gem::Requirement.new('>= 3.0.1', '< 4.0')
+  spec.required_ruby_version = Gem::Requirement.new('>= 3.2.8', '< 4.0')
 
   spec.add_runtime_dependency 'activesupport', '>= 7.0.8', '< 8.0'
+  spec.add_runtime_dependency 'observer', '~> 0.1'
 end
diff --git a/lib/LittleWeasel/metadata/invalid_words_metadata.rb b/lib/LittleWeasel/metadata/invalid_words_metadata.rb
index bf55584..340ce0f 100644
--- a/lib/LittleWeasel/metadata/invalid_words_metadata.rb
+++ b/lib/LittleWeasel/metadata/invalid_words_metadata.rb
@@ -80,7 +80,7 @@ def refresh(params: nil)
 
       # This method is called when a word is being searched in the
       # dictionary.
-      def word_search(params:)
+      def word_search(params:) # rubocop:disable Naming/PredicateMethod
         word_results = params[:word_results]
 
         # TODO: NOW: Should we be returning #word_valid? or #success?
diff --git a/lib/LittleWeasel/metadata/invalid_words_service_results.rb b/lib/LittleWeasel/metadata/invalid_words_service_results.rb
index 4a87271..60859b7 100644
--- a/lib/LittleWeasel/metadata/invalid_words_service_results.rb
+++ b/lib/LittleWeasel/metadata/invalid_words_service_results.rb
@@ -10,7 +10,6 @@ class InvalidWordsServiceResults
 
       def initialize(max_invalid_words_bytesize_on:,
         current_invalid_word_bytesize:, max_invalid_words_bytesize:)
-
         self.max_invalid_words_bytesize_on = max_invalid_words_bytesize_on
         self.current_invalid_word_bytesize = current_invalid_word_bytesize
         self.max_invalid_words_bytesize = max_invalid_words_bytesize
diff --git a/lib/LittleWeasel/metadata/metadatable.rb b/lib/LittleWeasel/metadata/metadatable.rb
index 1634270..cc8f0b9 100644
--- a/lib/LittleWeasel/metadata/metadatable.rb
+++ b/lib/LittleWeasel/metadata/metadatable.rb
@@ -7,8 +7,7 @@ module LittleWeasel
   module Metadata
     # This module defines methods to support objects that manage other objects
     # that manage metadata related to a dictionary/ies.
-    # rubocop: disable Lint/UnusedMethodArgument, ignored - Methods in this
-    #          module need to keep their argument names because of specs.
+    # rubocop: disable Lint/UnusedMethodArgument -- Methods in this module need to keep their argument names because of specs.
     module Metadatable
       def self.included(base)
         base.extend ClassMethods
diff --git a/lib/LittleWeasel/version.rb b/lib/LittleWeasel/version.rb
index 1f38596..42dfc46 100644
--- a/lib/LittleWeasel/version.rb
+++ b/lib/LittleWeasel/version.rb
@@ -2,5 +2,5 @@
 
 # The version of this gem
 module LittleWeasel
-  VERSION = '5.0.13'
+  VERSION = '6.0.0'
 end
diff --git a/lib/LittleWeasel/word_results.rb b/lib/LittleWeasel/word_results.rb
index 97330be..65312dc 100644
--- a/lib/LittleWeasel/word_results.rb
+++ b/lib/LittleWeasel/word_results.rb
@@ -37,7 +37,6 @@ class WordResults
     # :reek:BooleanParameter - ignored, boolean params do not determine logic path, but only report status.
     def initialize(original_word:, filters_matched: [],
       preprocessed_words: nil, word_cached: false, word_valid: false)
-
       self.original_word = original_word
       self.filters_matched = filters_matched
       self.word_cached = word_cached
diff --git a/spec/lib/LittleWeasel/modules/language_spec.rb b/spec/lib/LittleWeasel/modules/language_spec.rb
index e6f9bbc..2a30cae 100644
--- a/spec/lib/LittleWeasel/modules/language_spec.rb
+++ b/spec/lib/LittleWeasel/modules/language_spec.rb
@@ -59,7 +59,7 @@ def initialize(language)
         let(:language) { Object.new }
 
         it 'raises an error' do
-          expect { subject.normalize_language! }.to raise_error(NoMethodError, /undefined method `downcase'/)
+          expect { subject.normalize_language! }.to raise_error(NoMethodError, /undefined method [`|']downcase'/)
         end
       end
     end
@@ -105,7 +105,7 @@ def initialize(language)
       let(:language) { 1 }
 
       it 'returns nil' do
-        expect { described_class.normalize_language(language) }.to raise_error(NoMethodError, /undefined method `downcase'/)
+        expect { described_class.normalize_language(language) }.to raise_error(NoMethodError, /undefined method [`|']downcase'/)
       end
     end
   end
diff --git a/spec/lib/LittleWeasel/modules/locale_spec.rb b/spec/lib/LittleWeasel/modules/locale_spec.rb
index 5fdf904..a0d1ac4 100644
--- a/spec/lib/LittleWeasel/modules/locale_spec.rb
+++ b/spec/lib/LittleWeasel/modules/locale_spec.rb
@@ -78,7 +78,7 @@ def initialize(language, region)
         let(:language) { 1 }
 
         it 'raises an error' do
-          expect { subject.locale }.to raise_error(NoMethodError, /undefined method `downcase'/)
+          expect { subject.locale }.to raise_error(NoMethodError, /undefined method [`|']downcase'/)
         end
       end
 
@@ -87,7 +87,7 @@ def initialize(language, region)
         let(:region) { 1 }
 
         it 'raises an error' do
-          expect { subject.locale }.to raise_error(NoMethodError, /undefined method `upcase'/)
+          expect { subject.locale }.to raise_error(NoMethodError, /undefined method [`|']upcase'/)
         end
       end
     end
diff --git a/spec/lib/LittleWeasel/modules/region_spec.rb b/spec/lib/LittleWeasel/modules/region_spec.rb
index 5a4a278..ed6a60b 100644
--- a/spec/lib/LittleWeasel/modules/region_spec.rb
+++ b/spec/lib/LittleWeasel/modules/region_spec.rb
@@ -59,7 +59,7 @@ def initialize(region)
         let(:region) { Object.new }
 
         it 'raises an error' do
-          expect { subject.normalize_region! }.to raise_error(NoMethodError, /undefined method `upcase'/)
+          expect { subject.normalize_region! }.to raise_error(NoMethodError, /undefined method [`|']upcase'/)
         end
       end
     end
@@ -105,7 +105,7 @@ def initialize(region)
       let(:region) { 1 }
 
       it 'returns nil' do
-        expect { described_class.normalize_region(region) }.to raise_error(NoMethodError, /undefined method `upcase'/)
+        expect { described_class.normalize_region(region) }.to raise_error(NoMethodError, /undefined method [`|']upcase'/)
       end
     end
   end