diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 0a946b9d627dba3beeec49da3f14859602a6e934..c5175179bb37a7a2a0e30454ef35940558e3f3fb 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -319,13 +319,6 @@ Rails/ApplicationController:
     - 'spec/controllers/concerns/continue_params_spec.rb'
     - 'spec/lib/marginalia_spec.rb'
 
-# Offense count: 3
-# Cop supports --auto-correct.
-Rails/BelongsTo:
-  Exclude:
-    - 'app/models/deployment.rb'
-    - 'app/models/environment.rb'
-
 # Offense count: 155
 # Cop supports --auto-correct.
 Rails/ContentTag:
diff --git a/app/models/deployment.rb b/app/models/deployment.rb
index c06c809538a0ae66384352179686bee7085ff6dd..2f68f586867070fc615abbdb2feb43551f7cedc2 100644
--- a/app/models/deployment.rb
+++ b/app/models/deployment.rb
@@ -14,8 +14,8 @@ class Deployment < ApplicationRecord
 
   ARCHIVABLE_OFFSET = 50_000
 
-  belongs_to :project, required: true
-  belongs_to :environment, required: true
+  belongs_to :project, optional: false
+  belongs_to :environment, optional: false
   belongs_to :cluster, class_name: 'Clusters::Cluster', optional: true
   belongs_to :user
   belongs_to :deployable, polymorphic: true, optional: true # rubocop:disable Cop/PolymorphicAssociations
diff --git a/app/models/environment.rb b/app/models/environment.rb
index 450ed6206d55cc4ecd022a62f75085630cef8afd..8ec4d589c356ec349e2376a50450386f07428ca8 100644
--- a/app/models/environment.rb
+++ b/app/models/environment.rb
@@ -12,7 +12,7 @@ class Environment < ApplicationRecord
   self.reactive_cache_hard_limit = 10.megabytes
   self.reactive_cache_work_type = :external_dependency
 
-  belongs_to :project, required: true
+  belongs_to :project, optional: false
 
   use_fast_destroy :all_deployments
   nullify_if_blank :external_url