diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index fdf44eba..33f964cf 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,18 +15,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ['ubuntu-18.04', 'macos-latest']
-        ruby: ['2.2', '2.3', '2.4', '2.5', '2.7']
+        os: ['ubuntu-18.04', 'ubuntu-latest', 'macos-latest']
+        ruby: ['2.6', '2.7', '3.0', '3.1']
         experimental: [false]
         include:
-          - os: 'ubuntu-18.04'
+          - os: 'ubuntu-latest'
             ruby: 'head'
             experimental: true
-        exclude:
-          - os: 'ubuntu-18.04'
-            ruby: '2.2' # Rugged uses the wrong openssl version on CI and segfaults (similar to https://github.com/libgit2/rugged/issues/718)
-          - os: 'ubuntu-18.04'
-            ruby: '2.3' # Rugged uses the wrong openssl version on CI and segfaults (similar to https://github.com/libgit2/rugged/issues/718)
     runs-on: ${{ matrix.os }}
     continue-on-error: ${{ matrix.experimental }}
     steps:
diff --git a/.rubocop.yml b/.rubocop.yml
index acc533ce..816cafaa 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,5 +1,8 @@
 inherit_from: .rubocop_todo.yml
 
+AllCops:
+  NewCops: enable
+
 Metrics/ClassLength:
   Enabled: false
 
@@ -17,7 +20,7 @@ Style/GuardClause:
   Enabled: false
 
 Style/PredicateName:
-  NamePrefixBlacklist:
+  ForbiddenPrefixes:
     - is_
 
 Style/StringLiterals:
@@ -26,10 +29,13 @@ Style/StringLiterals:
 Style/TrailingCommaInArguments:
   EnforcedStyleForMultiline: comma
 
-Style/TrailingCommaInLiteral:
+Style/TrailingCommaInHashLiteral:
+  EnforcedStyleForMultiline: comma
+
+Style/TrailingCommaInArrayLiteral:
   EnforcedStyleForMultiline: comma
 
-Style/UnneededPercentQ:
+Style/RedundantPercentQ:
   Enabled: false
 
 Metrics/LineLength:
diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index b001d1a2..f55d5c9a 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1,125 +1,352 @@
 # This configuration was generated by
-# `rubocop --auto-gen-config`
-# on 2016-05-25 17:29:05 +0900 using RuboCop version 0.40.0.
+# `rubocop --auto-gen-config --exclude-limit 99999`
+# on 2022-04-15 03:12:24 UTC using RuboCop version 1.27.0.
 # 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
 # versions of RuboCop, may require this file to be generated again.
 
-# Offense count: 4
+# Offense count: 3
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: TreatCommentsAsGroupSeparators, ConsiderPunctuation, Include.
+# Include: **/*.gemspec
+Gemspec/OrderedDependencies:
+  Exclude:
+    - 'qiita-markdown.gemspec'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: Include.
+# Include: **/*.gemspec
+Gemspec/RequireMFA:
+  Exclude:
+    - 'qiita-markdown.gemspec'
+
+# Offense count: 1
+# Configuration parameters: Include.
+# Include: **/*.gemspec
+Gemspec/RequiredRubyVersion:
+  Exclude:
+    - 'qiita-markdown.gemspec'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Layout/ClosingHeredocIndentation:
+  Exclude:
+    - 'spec/qiita/markdown/processor_spec.rb'
+
+# Offense count: 9
+# This cop supports safe auto-correction (--auto-correct).
+Layout/EmptyLineAfterGuardClause:
+  Exclude:
+    - 'lib/qiita/markdown/filters/custom_block.rb'
+    - 'lib/qiita/markdown/filters/external_link.rb'
+    - 'lib/qiita/markdown/filters/footnote.rb'
+    - 'lib/qiita/markdown/filters/mention.rb'
+    - 'lib/qiita/markdown/filters/simplify.rb'
+    - 'lib/qiita/markdown/transformers/filter_attributes.rb'
+
+# Offense count: 22
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: AllowMultipleStyles, EnforcedHashRocketStyle, EnforcedColonStyle, EnforcedLastArgumentHashStyle.
+# SupportedHashRocketStyles: key, separator, table
+# SupportedColonStyles: key, separator, table
+# SupportedLastArgumentHashStyles: always_inspect, always_ignore, ignore_implicit, ignore_explicit
+Layout/HashAlignment:
+  Exclude:
+    - 'lib/qiita/markdown/filters/user_input_sanitizer.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBrackets.
+# SupportedStyles: space, no_space, compact
+# SupportedStylesForEmptyBrackets: space, no_space
+Layout/SpaceInsideArrayLiteralBrackets:
+  Exclude:
+    - 'lib/qiita/markdown/transformers/filter_iframe.rb'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+Lint/AmbiguousOperatorPrecedence:
+  Exclude:
+    - 'lib/qiita/markdown/filters/mention.rb'
+
+# Offense count: 5
+# Configuration parameters: IgnoredMethods, CountRepeatedAttributes.
 Metrics/AbcSize:
-  Max: 21
+  Max: 22
 
-# Offense count: 4
-# Configuration parameters: CountComments.
+# Offense count: 10
+# Configuration parameters: CountComments, CountAsOne, ExcludedMethods, IgnoredMethods.
 Metrics/MethodLength:
   Max: 20
 
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, BlockForwardingName.
+# SupportedStyles: anonymous, explicit
+Naming/BlockForwarding:
+  Exclude:
+    - 'lib/qiita/markdown/filters/truncate.rb'
+
 # Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
-# SupportedStyles: always, conditionals
-Style/AndOr:
+Naming/ConstantName:
   Exclude:
-    - 'lib/qiita/markdown/filters/syntax_highlight.rb'
+    - 'lib/qiita/markdown/filters/mention.rb'
+
+# Offense count: 1
+# Configuration parameters: ExpectMatchingDefinition, CheckDefinitionPathHierarchy, CheckDefinitionPathHierarchyRoots, Regex, IgnoreExecutableScripts, AllowedAcronyms.
+# CheckDefinitionPathHierarchyRoots: lib, spec, test, src
+# 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:
+    - 'lib/qiita-markdown.rb'
+
+# Offense count: 33
+# Configuration parameters: ForbiddenDelimiters.
+# ForbiddenDelimiters: (?-mix:(^|\s)(EO[A-Z]{1}|END)(\s|$))
+Naming/HeredocDelimiterNaming:
+  Exclude:
+    - 'spec/qiita/markdown/greenmat/html_toc_renderer_spec.rb'
+    - 'spec/qiita/markdown/summary_processor_spec.rb'
 
 # Offense count: 3
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
+# Configuration parameters: EnforcedStyleForLeadingUnderscores.
+# SupportedStylesForLeadingUnderscores: disallowed, required, optional
+Naming/MemoizedInstanceVariableName:
+  Exclude:
+    - 'benchmark/heading_anchor_rendering.rb'
+    - 'lib/qiita/markdown/filters/greenmat.rb'
+    - 'lib/qiita/markdown/greenmat/heading_rendering.rb'
+
+# Offense count: 1
+# Configuration parameters: MinNameLength, AllowNamesEndingInNumbers, AllowedNames, ForbiddenNames.
+# AllowedNames: at, by, db, id, in, io, ip, of, on, os, pp, to
+Naming/MethodParameterName:
+  Exclude:
+    - 'lib/qiita/markdown/filters/footnote.rb'
+
+# Offense count: 3
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
 # SupportedStyles: percent_q, bare_percent
 Style/BarePercentLiterals:
   Exclude:
     - 'lib/qiita/markdown/filters/syntax_highlight.rb'
 
 # Offense count: 1
-Style/ConstantName:
+# This cop supports safe auto-correction (--auto-correct).
+Style/ExpandPathArguments:
   Exclude:
-    - 'lib/qiita/markdown/filters/mention.rb'
+    - 'qiita-markdown.gemspec'
 
-# Offense count: 3
-Style/DoubleNegation:
+# Offense count: 47
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: always, always_true, never
+Style/FrozenStringLiteralComment:
   Exclude:
+    - 'Gemfile'
+    - 'Rakefile'
     - 'benchmark/heading_anchor_rendering.rb'
+    - 'lib/qiita-markdown.rb'
+    - 'lib/qiita/markdown.rb'
+    - 'lib/qiita/markdown/base_processor.rb'
+    - 'lib/qiita/markdown/embed/asciinema.rb'
+    - 'lib/qiita/markdown/embed/code_pen.rb'
+    - 'lib/qiita/markdown/embed/google_slide.rb'
+    - 'lib/qiita/markdown/embed/slide_share.rb'
+    - 'lib/qiita/markdown/embed/speeker_deck.rb'
+    - 'lib/qiita/markdown/embed/tweet.rb'
+    - 'lib/qiita/markdown/embed/youtube.rb'
     - 'lib/qiita/markdown/filters/checkbox.rb'
+    - 'lib/qiita/markdown/filters/code_block.rb'
+    - 'lib/qiita/markdown/filters/custom_block.rb'
+    - 'lib/qiita/markdown/filters/emoji.rb'
+    - 'lib/qiita/markdown/filters/external_link.rb'
+    - 'lib/qiita/markdown/filters/final_sanitizer.rb'
+    - 'lib/qiita/markdown/filters/footnote.rb'
+    - 'lib/qiita/markdown/filters/greenmat.rb'
+    - 'lib/qiita/markdown/filters/group_mention.rb'
+    - 'lib/qiita/markdown/filters/image_link.rb'
+    - 'lib/qiita/markdown/filters/inline_code_color.rb'
+    - 'lib/qiita/markdown/filters/mention.rb'
+    - 'lib/qiita/markdown/filters/simplify.rb'
+    - 'lib/qiita/markdown/filters/syntax_highlight.rb'
+    - 'lib/qiita/markdown/filters/toc.rb'
+    - 'lib/qiita/markdown/filters/truncate.rb'
+    - 'lib/qiita/markdown/filters/user_input_sanitizer.rb'
+    - 'lib/qiita/markdown/greenmat/heading_rendering.rb'
+    - 'lib/qiita/markdown/greenmat/html_renderer.rb'
+    - 'lib/qiita/markdown/greenmat/html_toc_renderer.rb'
+    - 'lib/qiita/markdown/processor.rb'
+    - 'lib/qiita/markdown/summary_processor.rb'
+    - 'lib/qiita/markdown/transformers/filter_attributes.rb'
+    - 'lib/qiita/markdown/transformers/filter_iframe.rb'
+    - 'lib/qiita/markdown/transformers/filter_script.rb'
+    - 'lib/qiita/markdown/transformers/strip_invalid_node.rb'
+    - 'lib/qiita/markdown/version.rb'
+    - 'qiita-markdown.gemspec'
+    - 'spec/qiita/markdown/filters/greenmat_spec.rb'
+    - 'spec/qiita/markdown/filters/inline_code_color_spec.rb'
+    - 'spec/qiita/markdown/greenmat/html_toc_renderer_spec.rb'
+    - 'spec/qiita/markdown/processor_spec.rb'
+    - 'spec/qiita/markdown/summary_processor_spec.rb'
+    - 'spec/spec_helper.rb'
 
-# Offense count: 1
-# Configuration parameters: ExpectMatchingDefinition, Regex, IgnoreExecutableScripts.
-Style/FileName:
+# Offense count: 6
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedShorthandSyntax, UseHashRocketsWithSymbolValues, PreferHashRocketsForNonAlnumEndingSymbols.
+# SupportedStyles: ruby19, hash_rockets, no_mixed_keys, ruby19_no_mixed_keys
+# SupportedShorthandSyntax: always, never, either
+Style/HashSyntax:
+  EnforcedStyle: ruby19
+  EnforcedShorthandSyntax: never
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+Style/IfUnlessModifier:
   Exclude:
-    - 'lib/qiita-markdown.rb'
+    - 'lib/qiita/markdown/filters/truncate.rb'
+    - 'lib/qiita/markdown/transformers/strip_invalid_node.rb'
 
-# Offense count: 11
-# Cop supports --auto-correct.
+# Offense count: 17
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: literals, strict
 Style/MutableConstant:
   Exclude:
     - 'lib/qiita/markdown/embed/code_pen.rb'
+    - 'lib/qiita/markdown/filters/group_mention.rb'
+    - 'lib/qiita/markdown/filters/inline_code_color.rb'
+    - 'lib/qiita/markdown/filters/mention.rb'
     - 'lib/qiita/markdown/embed/tweet.rb'
     - 'lib/qiita/markdown/filters/checkbox.rb'
     - 'lib/qiita/markdown/filters/code_block.rb'
-    - 'lib/qiita/markdown/filters/sanitize.rb'
     - 'lib/qiita/markdown/filters/simplify.rb'
     - 'lib/qiita/markdown/filters/syntax_highlight.rb'
-    - 'lib/qiita/markdown/processor.rb'
-    - 'lib/qiita/markdown/summary_processor.rb'
     - 'lib/qiita/markdown/version.rb'
 
 # Offense count: 2
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, MinBodyLength, SupportedStyles.
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, MinBodyLength.
 # SupportedStyles: skip_modifier_ifs, always
 Style/Next:
   Exclude:
     - 'lib/qiita/markdown/filters/code_block.rb'
     - 'lib/qiita/markdown/filters/image_link.rb'
 
-# Offense count: 11
-# Cop supports --auto-correct.
+# Offense count: 5
+# This cop supports unsafe auto-correction (--auto-correct-all).
+# Configuration parameters: EnforcedStyle, IgnoredMethods.
+# SupportedStyles: predicate, comparison
+Style/NumericPredicate:
+  Exclude:
+    - 'spec/**/*'
+    - 'benchmark/heading_anchor_rendering.rb'
+    - 'lib/qiita/markdown/greenmat/heading_rendering.rb'
+    - 'lib/qiita/markdown/greenmat/html_toc_renderer.rb'
+
+# Offense count: 1
+# Configuration parameters: AllowedMethods.
+# AllowedMethods: respond_to_missing?
+Style/OptionalBooleanParameter:
+  Exclude:
+    - 'lib/qiita/markdown/greenmat/heading_rendering.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/OrAssignment:
+  Exclude:
+    - 'lib/qiita/markdown/greenmat/html_toc_renderer.rb'
+
+# Offense count: 9
+# This cop supports safe auto-correction (--auto-correct).
 # Configuration parameters: PreferredDelimiters.
 Style/PercentLiteralDelimiters:
   Exclude:
     - 'benchmark/heading_anchor_rendering.rb'
     - 'lib/qiita/markdown/filters/mention.rb'
-    - 'lib/qiita/markdown/filters/sanitize.rb'
     - 'lib/qiita/markdown/filters/syntax_highlight.rb'
     - 'spec/qiita/markdown/processor_spec.rb'
     - 'spec/qiita/markdown/summary_processor_spec.rb'
 
 # Offense count: 1
-# Cop supports --auto-correct.
+# This cop supports safe auto-correction (--auto-correct).
 Style/PerlBackrefs:
   Exclude:
     - 'lib/qiita/markdown/filters/mention.rb'
 
 # Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, AllowInnerSlashes.
+# This cop supports unsafe auto-correction (--auto-correct-all).
+# Configuration parameters: Methods.
+Style/RedundantArgument:
+  Exclude:
+    - 'lib/qiita/markdown/filters/custom_block.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/RedundantRegexpCharacterClass:
+  Exclude:
+    - 'lib/qiita/markdown/filters/mention.rb'
+
+# Offense count: 9
+# This cop supports safe auto-correction (--auto-correct).
+Style/RedundantRegexpEscape:
+  Exclude:
+    - 'lib/qiita/markdown/filters/group_mention.rb'
+    - 'lib/qiita/markdown/filters/inline_code_color.rb'
+
+# Offense count: 4
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, AllowInnerSlashes.
 # SupportedStyles: slashes, percent_r, mixed
 Style/RegexpLiteral:
   Exclude:
-    - 'lib/qiita/markdown/filters/mention.rb'
     - 'lib/qiita/markdown/filters/inline_code_color.rb'
+    - 'lib/qiita/markdown/filters/mention.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: implicit, explicit
+Style/RescueStandardError:
+  Exclude:
+    - 'lib/qiita/markdown/filters/syntax_highlight.rb'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: ConvertCodeThatCanStartToReturnNil, AllowedMethods, MaxChainLength.
+# AllowedMethods: present?, blank?, presence, try, try!
+Style/SafeNavigation:
+  Exclude:
+    - 'lib/qiita/markdown/filters/custom_block.rb'
+    - 'lib/qiita/markdown/filters/toc.rb'
 
 # Offense count: 3
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
 # SupportedStyles: only_raise, only_fail, semantic
 Style/SignalException:
   Exclude:
     - 'lib/qiita/markdown/greenmat/heading_rendering.rb'
     - 'spec/qiita/markdown/summary_processor_spec.rb'
 
-# Offense count: 3
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyleForMultiline, SupportedStyles.
-# SupportedStyles: comma, consistent_comma, no_comma
+# Offense count: 13
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyleForMultiline.
+# SupportedStylesForMultiline: comma, consistent_comma, no_comma
 Style/TrailingCommaInArguments:
   Exclude:
     - 'lib/qiita/markdown/filters/mention.rb'
     - 'spec/qiita/markdown/processor_spec.rb'
 
-# Offense count: 9
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, MinSize, WordRegex.
+# Offense count: 12
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, MinSize, WordRegex.
 # SupportedStyles: percent, brackets
 Style/WordArray:
-  Enabled: false
+  Exclude:
+    - 'lib/qiita/markdown/filters/final_sanitizer.rb'
+    - 'lib/qiita/markdown/transformers/filter_script.rb'
+    - 'spec/qiita/markdown/processor_spec.rb'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 119781e3..776c65f5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,20 @@
 ## Unreleased
 
+## 0.42.0
+
+- Add for Ruby 3.0, 3.1 support
+- Bump greenmat from 3.5.1.3 to 3.5.1.4
+
+## 0.41.0
+
+- Bump greenmat from 3.5.1.2 to 3.5.1.3
+- Dropping Ruby 2.5 support (#107)
+- Bump rubocop from 0.40.0 to 1.7.0
+
+## 0.40.1
+
+- Fix to support file names containing colons.
+
 ## 0.40.0
 - Change ci platform to Github Actions.
 - Fix regular expressions to detect group id(url_name) for group mention.
diff --git a/lib/qiita/markdown/filters/code_block.rb b/lib/qiita/markdown/filters/code_block.rb
index 96a771a0..37ef0cbe 100644
--- a/lib/qiita/markdown/filters/code_block.rb
+++ b/lib/qiita/markdown/filters/code_block.rb
@@ -90,7 +90,8 @@ def linguist_language
           end
 
           def sections
-            @sections ||= (@text || "").split(":")
+            splited = (@text || "").split(":")
+            @sections ||= splited.length <= 2 ? splited : @text.split(":", 2)
           end
         end
       end
diff --git a/lib/qiita/markdown/filters/syntax_highlight.rb b/lib/qiita/markdown/filters/syntax_highlight.rb
index abfbd81f..e258ecc1 100644
--- a/lib/qiita/markdown/filters/syntax_highlight.rb
+++ b/lib/qiita/markdown/filters/syntax_highlight.rb
@@ -43,8 +43,8 @@ def timeout
         end
 
         class Highlighter
-          def self.call(*args)
-            new(*args).call
+          def self.call(**args)
+            new(**args).call
           end
 
           def initialize(default_language: nil, node: nil, specific_language: nil)
diff --git a/lib/qiita/markdown/transformers/filter_attributes.rb b/lib/qiita/markdown/transformers/filter_attributes.rb
index 5341d8ef..e05b6596 100644
--- a/lib/qiita/markdown/transformers/filter_attributes.rb
+++ b/lib/qiita/markdown/transformers/filter_attributes.rb
@@ -27,8 +27,8 @@ class FilterAttributes
 
         DELIMITER = " ".freeze
 
-        def self.call(*args)
-          new(*args).transform
+        def self.call(**args)
+          new(**args).transform
         end
 
         def initialize(env)
diff --git a/lib/qiita/markdown/transformers/filter_iframe.rb b/lib/qiita/markdown/transformers/filter_iframe.rb
index 3a847d6d..899337b2 100644
--- a/lib/qiita/markdown/transformers/filter_iframe.rb
+++ b/lib/qiita/markdown/transformers/filter_iframe.rb
@@ -11,8 +11,8 @@ class FilterIframe
           Embed::GoogleSlide::SCRIPT_HOST,
         ].flatten.freeze
 
-        def self.call(*args)
-          new(*args).transform
+        def self.call(**args)
+          new(**args).transform
         end
 
         def initialize(env)
diff --git a/lib/qiita/markdown/transformers/filter_script.rb b/lib/qiita/markdown/transformers/filter_script.rb
index fc70021f..290f7340 100644
--- a/lib/qiita/markdown/transformers/filter_script.rb
+++ b/lib/qiita/markdown/transformers/filter_script.rb
@@ -12,8 +12,8 @@ class FilterScript
           Embed::Asciinema::SCRIPT_HOST,
         ].flatten.freeze
 
-        def self.call(*args)
-          new(*args).transform
+        def self.call(**args)
+          new(**args).transform
         end
 
         def initialize(env)
diff --git a/lib/qiita/markdown/transformers/strip_invalid_node.rb b/lib/qiita/markdown/transformers/strip_invalid_node.rb
index d9971485..199fb5c5 100644
--- a/lib/qiita/markdown/transformers/strip_invalid_node.rb
+++ b/lib/qiita/markdown/transformers/strip_invalid_node.rb
@@ -3,8 +3,8 @@ module Markdown
     module Transformers
       # Wraps a node env to transform invalid node.
       class StripInvalidNode
-        def self.call(*args)
-          new(*args).transform
+        def self.call(**args)
+          new(**args).transform
         end
 
         def initialize(env)
diff --git a/lib/qiita/markdown/version.rb b/lib/qiita/markdown/version.rb
index 6eb9bae0..b90d5dc6 100644
--- a/lib/qiita/markdown/version.rb
+++ b/lib/qiita/markdown/version.rb
@@ -1,5 +1,5 @@
 module Qiita
   module Markdown
-    VERSION = "0.40.0"
+    VERSION = "0.42.0"
   end
 end
diff --git a/qiita-markdown.gemspec b/qiita-markdown.gemspec
index 625f89ad..c34a0c67 100644
--- a/qiita-markdown.gemspec
+++ b/qiita-markdown.gemspec
@@ -16,17 +16,17 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
-  spec.required_ruby_version = ">= 2.2.0"
+  spec.required_ruby_version = ">= 2.6.0"
 
   spec.add_dependency "gemoji"
   spec.add_dependency "github-linguist", "~> 4.0"
   spec.add_dependency "html-pipeline", "~> 2.0"
   spec.add_dependency "mem"
   spec.add_dependency "rouge", "3.26.0"
-  spec.add_dependency "greenmat", "3.5.1.2"
+  spec.add_dependency "greenmat", "3.5.1.4"
   spec.add_dependency "sanitize"
   spec.add_dependency "addressable"
-  spec.add_development_dependency "activesupport", "4.2.6"
+  spec.add_development_dependency "activesupport", "~> 5.2.7"
   spec.add_development_dependency "benchmark-ips", "~> 1.2"
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "codeclimate-test-reporter", "0.4.4"
@@ -34,5 +34,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "pry"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.1"
-  spec.add_development_dependency "rubocop", "0.49.1"
+  spec.add_development_dependency "rubocop", "~> 1.27.0"
 end
diff --git a/spec/qiita/markdown/processor_spec.rb b/spec/qiita/markdown/processor_spec.rb
index 30aa08ea..3acb4b7f 100644
--- a/spec/qiita/markdown/processor_spec.rb
+++ b/spec/qiita/markdown/processor_spec.rb
@@ -156,6 +156,26 @@
         end
       end
 
+      context "with code & filename with `:`" do
+        let(:markdown) do
+          <<-MARKDOWN.strip_heredoc
+            ```ruby:test:example.rb
+            1
+            ```
+          MARKDOWN
+        end
+
+        it "returns code-frame, code-lang, and highlighted pre element" do
+          should eq <<-HTML.strip_heredoc
+            <div class="code-frame" data-lang="ruby">
+            <div class="code-lang"><span class="bold">test:example.rb</span></div>
+            <div class="highlight"><pre class="codehilite"><code><span class="mi">1</span>
+            </code></pre></div>
+            </div>
+          HTML
+        end
+      end
+
       context "with code & filename with .php" do
         let(:markdown) do
           <<-MARKDOWN.strip_heredoc