diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 8ade427..d64948a 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -207,13 +207,6 @@ Style/PercentLiteralDelimiters:
     - 'app/controllers/problems_searcher.rb'
     - 'spec/models/notice_spec.rb'
 
-# Offense count: 3
-# Cop supports --auto-correct.
-Style/Proc:
-  Exclude:
-    - 'app/models/notice.rb'
-    - 'app/models/problem.rb'
-
 # Offense count: 1
 # Configuration parameters: Methods.
 Style/SingleLineBlockParams:
diff --git a/app/models/notice.rb b/app/models/notice.rb
index ce4ff2c..9a74cfb 100644
--- a/app/models/notice.rb
+++ b/app/models/notice.rb
@@ -28,7 +28,7 @@ class Notice
 
   scope :ordered, -> { order_by(:created_at.asc) }
   scope :reverse_ordered, -> { order_by(:created_at.desc) }
-  scope :for_errs, Proc.new { |errs|
+  scope :for_errs, -> (errs) {
     where(:err_id.in => errs.all.map(&:id))
   }
 
diff --git a/app/models/problem.rb b/app/models/problem.rb
index cb212cd..998b711 100644
--- a/app/models/problem.rb
+++ b/app/models/problem.rb
@@ -12,8 +12,8 @@ class Problem
     user_agents: :user_agent_string
   }.freeze
 
-  field :last_notice_at, :type => ActiveSupport::TimeWithZone, :default => Proc.new { Time.zone.now }
-  field :first_notice_at, :type => ActiveSupport::TimeWithZone, :default => Proc.new { Time.zone.now }
+  field :last_notice_at, :type => ActiveSupport::TimeWithZone, :default => proc { Time.zone.now }
+  field :first_notice_at, :type => ActiveSupport::TimeWithZone, :default => proc { Time.zone.now }
   field :last_deploy_at, :type => Time
   field :resolved, :type => Boolean, :default => false
   field :resolved_at, :type => Time
--
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