diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 4ff3538..c2a5378 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -6,10 +6,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - name: Install Ruby (2.7)
+    - name: Install Ruby (3.4)
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.7
+        ruby-version: 3.4
     - uses: amancevice/setup-code-climate@v0
       with:
         cc_test_reporter_id: ${{ secrets.CC_TEST_REPORTER_ID }}
diff --git a/.github/workflows/danger.yml b/.github/workflows/danger.yml
index c643c4b..8109d16 100644
--- a/.github/workflows/danger.yml
+++ b/.github/workflows/danger.yml
@@ -5,7 +5,7 @@ on:
     types: [opened, reopened, edited, synchronize]
 jobs:
   danger:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
       with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c75974d..5faa4f9 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,10 +8,12 @@ jobs:
       fail-fast: false
       matrix:
         entry:
-          - { ruby: '2.7', allowed-failure: false }
-          - { ruby: '3.0', allowed-failure: false }
-          - { ruby: '3.1', allowed-failure: false }
-          - { ruby: '3.2', allowed-failure: false }
+          - { ruby: '2.7' }
+          - { ruby: '3.0' }
+          - { ruby: '3.1' }
+          - { ruby: '3.2' }
+          - { ruby: '3.3' }
+          - { ruby: '3.4' }
     name: test (${{ matrix.entry.ruby }})
     steps:
       - uses: actions/checkout@v3
@@ -20,4 +22,3 @@ jobs:
           ruby-version: ${{ matrix.entry.ruby }}
       - run: bundle install --jobs=3 --retry=3 --path=vendor/bundle
       - run: bundle exec rake spec
-        continue-on-error: ${{ matrix.entry.allowed-failure }}
diff --git a/.gitignore b/.gitignore
index 70c558c..163ea08 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 Gemfile.lock
 pkg
 coverage
+.DS_Store
\ No newline at end of file
diff --git a/.rubocop.yml b/.rubocop.yml
index 9097c2a..1e2b453 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,7 +1,3 @@
-require:
-  - rubocop-rake
-  - rubocop-rspec
-
 AllCops:
   TargetRubyVersion: 2.7
   NewCops: enable
@@ -20,4 +16,8 @@ Style/HashTransformValues:
 Metrics:
   Enabled: false
 
+plugins:
+  - rubocop-rake
+  - rubocop-rspec
+
 inherit_from: .rubocop_todo.yml
diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 4a615c0..041c32f 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2023-04-03 00:36:28 UTC using RuboCop version 1.48.1.
+# on 2025-07-05 14:01:58 UTC using RuboCop version 1.77.0.
 # 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
@@ -81,6 +81,7 @@ Lint/NonDeterministicRequireOrder:
 # AllowedAcronyms: CLI, DSL, ACL, API, ASCII, CPU, CSS, DNS, EOF, GUID, HTML, HTTP, HTTPS, ID, IP, JSON, LHS, QPS, RAM, RHS, RPC, SLA, SMTP, SQL, SSH, TCP, TLS, TTL, UDP, UI, UID, UUID, URI, URL, UTF8, VM, XML, XMPP, XSRF, XSS
 Naming/FileName:
   Exclude:
+    - 'Rakefile.rb'
     - 'lib/ruby-link-checker.rb'
 
 # Offense count: 1
@@ -107,13 +108,13 @@ RSpec/BeNil:
 # Offense count: 2
 RSpec/BeforeAfterAll:
   Exclude:
-    - 'spec/spec_helper.rb'
-    - 'spec/rails_helper.rb'
-    - 'spec/support/**/*.rb'
+    - '**/spec/spec_helper.rb'
+    - '**/spec/rails_helper.rb'
+    - '**/spec/support/**/*.rb'
     - 'spec/ruby-link-checker/net/http/checker_spec.rb'
     - 'spec/ruby-link-checker/typhoeus/hydra/checker_spec.rb'
 
-# Offense count: 34
+# Offense count: 35
 # Configuration parameters: Prefixes, AllowedPatterns.
 # Prefixes: when, with, without
 RSpec/ContextWording:
@@ -127,7 +128,7 @@ RSpec/ContextWording:
 
 # Offense count: 1
 # This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: SkipBlocks, EnforcedStyle.
+# Configuration parameters: SkipBlocks, EnforcedStyle, OnlyStaticConstants.
 # SupportedStyles: described_class, explicit
 RSpec/DescribedClass:
   Exclude:
@@ -151,18 +152,6 @@ RSpec/ExpectInHook:
     - 'spec/ruby-link-checker/net/http/checker_spec.rb'
     - 'spec/ruby-link-checker/typhoeus/hydra/checker_spec.rb'
 
-# Offense count: 6
-# Configuration parameters: Include, CustomTransform, IgnoreMethods, SpecSuffixOnly.
-# Include: **/*_spec*rb*, **/spec/**/*
-RSpec/FilePath:
-  Exclude:
-    - 'spec/ruby-link-checker/callbacks_spec.rb'
-    - 'spec/ruby-link-checker/checker_spec.rb'
-    - 'spec/ruby-link-checker/config_spec.rb'
-    - 'spec/ruby-link-checker/net/http/checker_spec.rb'
-    - 'spec/ruby-link-checker/typhoeus/hydra/checker_spec.rb'
-    - 'spec/ruby-link-checker/version_spec.rb'
-
 # Offense count: 6
 # Configuration parameters: AssignmentOnly.
 RSpec/InstanceVariable:
@@ -187,7 +176,7 @@ RSpec/MessageSpies:
 RSpec/MultipleExpectations:
   Max: 9
 
-# Offense count: 57
+# Offense count: 58
 # Configuration parameters: EnforcedStyle, IgnoreSharedExamples.
 # SupportedStyles: always, named_only
 RSpec/NamedSubject:
@@ -202,6 +191,19 @@ RSpec/NamedSubject:
 RSpec/NestedGroups:
   Max: 6
 
+# Offense count: 6
+# Configuration parameters: Include, CustomTransform, IgnoreMethods, IgnoreMetadata.
+# Include: **/*_spec.rb
+RSpec/SpecFilePathFormat:
+  Exclude:
+    - '**/spec/routing/**/*'
+    - 'spec/ruby-link-checker/callbacks_spec.rb'
+    - 'spec/ruby-link-checker/checker_spec.rb'
+    - 'spec/ruby-link-checker/config_spec.rb'
+    - 'spec/ruby-link-checker/net/http/checker_spec.rb'
+    - 'spec/ruby-link-checker/typhoeus/hydra/checker_spec.rb'
+    - 'spec/ruby-link-checker/version_spec.rb'
+
 # Offense count: 39
 RSpec/SubjectStub:
   Exclude:
@@ -216,6 +218,13 @@ Style/CaseEquality:
   Exclude:
     - 'spec/support/link_checker.rb'
 
+# Offense count: 2
+# This cop supports unsafe autocorrection (--autocorrect-all).
+Style/ComparableBetween:
+  Exclude:
+    - 'lib/ruby-link-checker/net/http/result.rb'
+    - 'lib/ruby-link-checker/typhoeus/hydra/result.rb'
+
 # Offense count: 20
 # Configuration parameters: AllowedConstants.
 Style/Documentation:
@@ -237,12 +246,21 @@ Style/Documentation:
     - 'lib/ruby-link-checker/typhoeus/hydra/config.rb'
     - 'lib/ruby-link-checker/typhoeus/hydra/result.rb'
 
+# Offense count: 1
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: trailing_conditional, ternary
+Style/EmptyStringInsideInterpolation:
+  Exclude:
+    - 'lib/ruby-link-checker/result.rb'
+
 # Offense count: 15
 # This cop supports unsafe autocorrection (--autocorrect-all).
 # Configuration parameters: EnforcedStyle.
 # SupportedStyles: always, always_true, never
 Style/FrozenStringLiteralComment:
   Exclude:
+    - '**/*.arb'
     - 'benchmarks/check.rb'
     - 'lib/ruby-link-checker/errors.rb'
     - 'lib/ruby-link-checker/net/http.rb'
@@ -304,9 +322,29 @@ Style/StringLiterals:
   Exclude:
     - 'lib/ruby-link-checker/checker.rb'
 
+# Offense count: 3
+# This cop supports safe autocorrection (--autocorrect).
+Style/SuperArguments:
+  Exclude:
+    - 'lib/ruby-link-checker/net/http/checker.rb'
+    - 'lib/ruby-link-checker/typhoeus/hydra/checker.rb'
+    - 'spec/ruby-link-checker/typhoeus/hydra/checker_spec.rb'
+
+# Offense count: 7
+# This cop supports safe autocorrection (--autocorrect).
+Style/SuperWithArgsParentheses:
+  Exclude:
+    - 'lib/ruby-link-checker/errors/redirect_loop_error.rb'
+    - 'lib/ruby-link-checker/net/http/checker.rb'
+    - 'lib/ruby-link-checker/net/http/result.rb'
+    - 'lib/ruby-link-checker/result.rb'
+    - 'lib/ruby-link-checker/typhoeus/hydra/checker.rb'
+    - 'lib/ruby-link-checker/typhoeus/hydra/result.rb'
+    - 'spec/ruby-link-checker/typhoeus/hydra/checker_spec.rb'
+
 # Offense count: 1
 # This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, AllowedPatterns.
+# Configuration parameters: AllowHeredoc, AllowURI, AllowQualifiedName, URISchemes, IgnoreCopDirectives, AllowedPatterns, SplitStrings.
 # URISchemes: http, https
 Layout/LineLength:
   Max: 123
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a2d4ebd..cfdc84b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
-### 0.2.1 (Next)
+### 0.3.0 (Next)
 
+* [#10](https://github.com/dblock/ruby-link-checker/pull/10): Add a space after `:` to help rendering in GHA - [@dblock](https://github.com/dblock).
 * Your contribution here.
 
 ### 0.2.0 (2023-04-03)
diff --git a/README.md b/README.md
index 8a1d963..6da5274 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,7 @@ A fast Ruby link checker with support for multiple HTTP libraries. Does not pars
     - [LinkChecker::Net::HTTP](#linkcheckernethttp)
   - [Options](#options)
     - [Retries](#retries)
+    - [Retry After](#retry-after)
     - [Results](#results)
     - [Methods](#methods)
     - [Logger](#logger)
@@ -170,6 +171,14 @@ By default link checkers do not retry. You can set a number of times to retry al
 checker = LinkChecker::Net::HTTP::Checker.new(retry: 1)
 ```
 
+#### Retry After
+
+If retry is enabled, link checkers can wait for a number of seconds before retrying.
+
+```ruby
+checker = LinkChecker::Net::HTTP::Checker.new(retry_after: 1) # wait for 1 second before retrying
+```
+
 #### Results
 
 By default checkers collect results. 
diff --git a/lib/ruby-link-checker/result.rb b/lib/ruby-link-checker/result.rb
index 9c9525f..d6d808b 100644
--- a/lib/ruby-link-checker/result.rb
+++ b/lib/ruby-link-checker/result.rb
@@ -51,7 +51,7 @@ def to_s
                  else
                    'ERROR'
                  end
-      "#{method} #{uri}#{result_uri == uri ? nil : ' (' + result_uri.to_s + ')'}: #{status_s} (#{code})"
+      "#{method} #{uri}#{result_uri == uri ? nil : ' (' + result_uri.to_s + ')'} : #{status_s} (#{code})"
     end
   end
 
diff --git a/lib/ruby-link-checker/version.rb b/lib/ruby-link-checker/version.rb
index b7fc8a3..859f396 100644
--- a/lib/ruby-link-checker/version.rb
+++ b/lib/ruby-link-checker/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module LinkChecker
-  VERSION = '0.2.1'
+  VERSION = '0.3.0'
 end
diff --git a/spec/ruby-link-checker/net/http/checker_spec.rb b/spec/ruby-link-checker/net/http/checker_spec.rb
index 1e6f3a5..04f44b6 100644
--- a/spec/ruby-link-checker/net/http/checker_spec.rb
+++ b/spec/ruby-link-checker/net/http/checker_spec.rb
@@ -46,7 +46,7 @@
     it 'times out' do
       expect(result.success?).to be false
       expect(result.error?).to be true
-      expect(result.to_s).to eq 'GET https://www.example.org: ERROR (Net::OpenTimeout)'
+      expect(result.to_s).to eq 'GET https://www.example.org : ERROR (Net::OpenTimeout)'
     end
 
     context 'with metadata' do
diff --git a/spec/ruby-link-checker/typhoeus/hydra/checker_spec.rb b/spec/ruby-link-checker/typhoeus/hydra/checker_spec.rb
index d758c75..4c72449 100644
--- a/spec/ruby-link-checker/typhoeus/hydra/checker_spec.rb
+++ b/spec/ruby-link-checker/typhoeus/hydra/checker_spec.rb
@@ -51,7 +51,7 @@ def check(url, options = {})
       it 'times out' do
         expect(result.success?).to be false
         expect(result.error?).to be true
-        expect(result.to_s).to eq 'GET https://www.example.org: ERROR (Timeout::Error)'
+        expect(result.to_s).to eq 'GET https://www.example.org : ERROR (Timeout::Error)'
       end
 
       context 'with metadata' do