diff --git a/Gemfile b/Gemfile
index 3d2af797..6a16b77e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -145,6 +145,7 @@ group :development do
   gem 'derailed_benchmarks'
   gem 'rack-mini-profiler'
   gem 'stackprof'
+  gem 'benchmark-ips'
 end
 
 group :production do
diff --git a/Gemfile.lock b/Gemfile.lock
index d0fca141..c5604a15 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -683,6 +683,7 @@ DEPENDENCIES
   addressable (~> 2.6)
   annotate (~> 2.7)
   aws-sdk-s3 (~> 1.41)
+  benchmark-ips
   better_errors (~> 2.5)
   binding_of_caller (~> 0.7)
   blurhash (~> 0.1)
diff --git a/app/helpers/jsonld_helper.rb b/app/helpers/jsonld_helper.rb
index 331899af..60dc25dd 100644
--- a/app/helpers/jsonld_helper.rb
+++ b/app/helpers/jsonld_helper.rb
@@ -53,7 +53,7 @@ module JsonLdHelper
     needle   = Addressable::URI.parse(url).host
     haystack = Addressable::URI.parse(@account.uri).host
 
-    !haystack.casecmp(needle).zero?
+    !haystack.casecmp?(needle)
   end
 
   def canonicalize(json)
diff --git a/app/lib/formatter.rb b/app/lib/formatter.rb
index 21cd4f17..068fab7c 100644
--- a/app/lib/formatter.rb
+++ b/app/lib/formatter.rb
@@ -370,7 +370,7 @@ class Formatter
 
     escaped = text.chars.map do |c|
       output = begin
-        if c.ord.to_s(16).length > 2 && UNICODE_ESCAPE_BLACKLIST_RE.match(c).nil?
+        if c.ord > 255 && !UNICODE_ESCAPE_BLACKLIST_RE.match?(c)
           CGI.escape(c)
         else
           c
diff --git a/app/lib/tag_manager.rb b/app/lib/tag_manager.rb
index aaee7ef5..c4655965 100644
--- a/app/lib/tag_manager.rb
+++ b/app/lib/tag_manager.rb
@@ -7,11 +7,11 @@ class TagManager
   include RoutingHelper
 
   def web_domain?(domain)
-    domain.nil? || domain.gsub(/[\/]/, '').casecmp(Rails.configuration.x.web_domain).zero?
+    domain.nil? || domain.gsub(/[\/]/, '').casecmp?(Rails.configuration.x.web_domain)
   end
 
   def local_domain?(domain)
-    domain.nil? || domain.gsub(/[\/]/, '').casecmp(Rails.configuration.x.local_domain).zero?
+    domain.nil? || domain.gsub(/[\/]/, '').casecmp?(Rails.configuration.x.local_domain)
   end
 
   def normalize_domain(domain)
@@ -35,9 +35,9 @@ class TagManager
   end
 
   def same_acct?(canonical, needle)
-    return true if canonical.casecmp(needle).zero?
+    return true if canonical.casecmp?(needle)
     username, domain = needle.split('@')
-    local_domain?(domain) && canonical.casecmp(username).zero?
+    local_domain?(domain) && canonical.casecmp?(username)
   end
 
   def local_url?(url)
diff --git a/app/serializers/rest/status_serializer.rb b/app/serializers/rest/status_serializer.rb
index 184c6c35..b6ecd1f5 100644
--- a/app/serializers/rest/status_serializer.rb
+++ b/app/serializers/rest/status_serializer.rb
@@ -8,7 +8,7 @@ class REST::StatusSerializer < ActiveModel::Serializer
 
   attribute :favourited, if: :current_user?
   attribute :reblogged, if: :current_user?
-  
+
   attribute :content, unless: :source_requested?
   attribute :rich_content, unless: :source_requested?
   attribute :plain_markdown, unless: :source_requested?
@@ -110,11 +110,12 @@ class REST::StatusSerializer < ActiveModel::Serializer
     return
   end
 
+  PINNABLE_VISIBILITIES = %w(public unlisted).freeze
   def pinnable
     current_user? &&
       current_user.account_id == object.account_id &&
       !object.reblog? &&
-      %w(public unlisted).include?(object.visibility)
+      PINNABLE_VISIBILITIES.include?(object.visibility)
   end
 
   def pinned_by_group
@@ -122,11 +123,7 @@ class REST::StatusSerializer < ActiveModel::Serializer
   end
 
   def pinnable_by_group
-    if object.group_id?
-      true
-    else
-      false
-    end
+    object.group_id?
   end
 
   def source_requested?
diff --git a/config/initializers/active_model_serializers.rb b/config/initializers/active_model_serializers.rb
index 329a5fb2..fc2dafff 100644
--- a/config/initializers/active_model_serializers.rb
+++ b/config/initializers/active_model_serializers.rb
@@ -11,7 +11,10 @@ class ActiveModel::Serializer::Reflection
   def build_association(parent_serializer, parent_serializer_options, include_slice = {})
     serializer = options[:serializer]
 
-    parent_serializer_options.merge!(named_contexts: serializer._named_contexts, context_extensions: serializer._context_extensions) if serializer.respond_to?(:_named_contexts)
+    if serializer.respond_to?(:_named_contexts)
+      parent_serializer_options[:named_contexts] = serializer._named_contexts
+      parent_serializer_options[:context_extensions] = serializer._context_extensions
+    end
 
     association_options = {
       parent_serializer: parent_serializer,
diff --git a/config/initializers/open_uri_redirection.rb b/config/initializers/open_uri_redirection.rb
index e9de85bd..6be84105 100644
--- a/config/initializers/open_uri_redirection.rb
+++ b/config/initializers/open_uri_redirection.rb
@@ -2,7 +2,7 @@ require 'open-uri'
 
 module OpenURI
   def self.redirectable?(uri1, uri2) # :nodoc:
-    uri1.scheme.casecmp(uri2.scheme).zero? ||
+    uri1.scheme.casecmp?(uri2.scheme) ||
       (/\A(?:http|https|ftp)\z/i =~ uri1.scheme && /\A(?:http|https|ftp)\z/i =~ uri2.scheme)
   end
 end
diff --git a/lib/gabsocial/migration_helpers.rb b/lib/gabsocial/migration_helpers.rb
index 4737cfc9..f8fc80b0 100644
--- a/lib/gabsocial/migration_helpers.rb
+++ b/lib/gabsocial/migration_helpers.rb
@@ -44,13 +44,13 @@ module GabSocial
     # Stub for Database.postgresql? from GitLab
     def self.postgresql?
       %w[postgresql postgresql_makara].any? do |adapter|
-        ActiveRecord::Base.configurations[Rails.env]['adapter'].casecmp(adapter).zero?
+        ActiveRecord::Base.configurations[Rails.env]['adapter'].casecmp?(adapter)
       end
     end
 
     # Stub for Database.mysql? from GitLab
     def self.mysql?
-      ActiveRecord::Base.configurations[Rails.env]['adapter'].casecmp('mysql2').zero?
+      ActiveRecord::Base.configurations[Rails.env]['adapter'].casecmp?('mysql2')
     end
 
     # Model that can be used for querying permissions of a SQL user.