diff --git a/app/services/merge_requests/close_service.rb b/app/services/merge_requests/close_service.rb
index d59a6c87e7e4490b6a48d7038b0aabf6ec6a6569..aab8febc452460387ea77dbda7d062a14c0c5112 100644
--- a/app/services/merge_requests/close_service.rb
+++ b/app/services/merge_requests/close_service.rb
@@ -5,13 +5,7 @@ class CloseService < MergeRequests::BaseService
     include RemovesRefs
 
     def execute(merge_request, commit = nil)
-      if Feature.enabled?(:destroy_fork_network_on_archive, project)
-        unless params[:skip_authorization].present? || can?(current_user, :update_merge_request, merge_request)
-          return merge_request
-        end
-      else
-        return merge_request unless can?(current_user, :update_merge_request, merge_request)
-      end
+      return merge_request unless authorized_to_close?(merge_request)
 
       # If we close MergeRequest we want to ignore validation
       # so we can close broken one (Ex. fork project removed)
@@ -55,6 +49,10 @@ def expire_unapproved_key(merge_request)
     def trigger_merge_request_merge_status_updated(merge_request)
       GraphqlTriggers.merge_request_merge_status_updated(merge_request)
     end
+
+    def authorized_to_close?(merge_request)
+      params[:skip_authorization].present? || can?(current_user, :update_merge_request, merge_request)
+    end
   end
 end
 
diff --git a/app/services/projects/update_service.rb b/app/services/projects/update_service.rb
index 1a5d0c061a6870aca55af4d61e5c3497a6cdcc28..eefbce438416097695e05f27da1ac915b8e7cff7 100644
--- a/app/services/projects/update_service.rb
+++ b/app/services/projects/update_service.rb
@@ -37,11 +37,7 @@ def execute
       update_project!
       after_update
 
-      if Feature.enabled?(:destroy_fork_network_on_archive, project) &&
-          project.previous_changes[:archived] == [false, true]
-
-        UnlinkForkService.new(project, current_user).execute
-      end
+      UnlinkForkService.new(project, current_user).execute if archiving_project?
 
       success
     rescue ActiveRecord::ActiveRecordError
@@ -60,6 +56,10 @@ def run_auto_devops_pipeline?
 
     private
 
+    def archiving_project?
+      project.previous_changes[:archived] == [false, true]
+    end
+
     def update_project!
       if Feature.disabled?(:replicate_deletion_schedule_operations, project)
         return project.update!(params.except(*non_assignable_project_params))
diff --git a/config/feature_flags/beta/destroy_fork_network_on_archive.yml b/config/feature_flags/beta/destroy_fork_network_on_archive.yml
deleted file mode 100644
index 972c797ea271c2d92654dbed0055c38ac5cd64b0..0000000000000000000000000000000000000000
--- a/config/feature_flags/beta/destroy_fork_network_on_archive.yml
+++ /dev/null
@@ -1,9 +0,0 @@
----
-name: destroy_fork_network_on_archive
-feature_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/518708
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/189438
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/538925
-milestone: '18.0'
-type: beta
-group: group::source code
-default_enabled: true
diff --git a/spec/services/merge_requests/close_service_spec.rb b/spec/services/merge_requests/close_service_spec.rb
index 55c9b3ff1d0b90d24d793de988d08163354f75ed..0bddbc0bbfbdf6a044c5f4929f0a4c248605f57e 100644
--- a/spec/services/merge_requests/close_service_spec.rb
+++ b/spec/services/merge_requests/close_service_spec.rb
@@ -171,28 +171,5 @@ def execute
         end
       end
     end
-
-    context 'with feature flag :destroy_fork_network_on_archive disabled' do
-      before do
-        stub_feature_flags(destroy_fork_network_on_archive: false)
-      end
-
-      context 'when user has permission' do
-        it 'closes MR' do
-          result = service.execute(merge_request)
-
-          expect(result).to be_closed
-        end
-      end
-
-      context 'when user does not have permission' do
-        it 'does not close MR' do
-          guest_service = described_class.new(project: project, current_user: guest)
-          result = guest_service.execute(merge_request)
-
-          expect(result).to be_open
-        end
-      end
-    end
   end
 end
diff --git a/spec/services/projects/update_service_spec.rb b/spec/services/projects/update_service_spec.rb
index 1f566eedbe1b2b47844c35a69e050092ee2a0c44..e7beba07d2e01cc78a102e71cca65ceee309abbf 100644
--- a/spec/services/projects/update_service_spec.rb
+++ b/spec/services/projects/update_service_spec.rb
@@ -529,35 +529,21 @@
           )
       end
 
-      context 'when the destroy_fork_network_on_archive feature flag is enabled' do
-        context 'when project is being archived' do
-          it 'calls UnlinkForkService' do
-            project.update!(archived: false)
+      context 'when project is being archived' do
+        it 'calls UnlinkForkService' do
+          project.update!(archived: false)
 
-            expect(Projects::UnlinkForkService).to receive(:new).with(project, user).and_return(unlink_fork_service)
+          expect(Projects::UnlinkForkService).to receive(:new).with(project, user).and_return(unlink_fork_service)
 
-            update_project(project, user, archived: true)
-          end
-        end
-
-        context 'when project is not being archived' do
-          it 'does not call UnlinkForkService' do
-            expect(Projects::UnlinkForkService).not_to receive(:new)
-
-            update_project(project, user, archived: false)
-          end
+          update_project(project, user, archived: true)
         end
       end
 
-      context 'when the destroy_fork_network_on_archive feature flag is disabled' do
-        before do
-          stub_feature_flags(destroy_fork_network_on_archive: false)
-        end
-
+      context 'when project is not being archived' do
         it 'does not call UnlinkForkService' do
           expect(Projects::UnlinkForkService).not_to receive(:new)
 
-          update_project(project, user, archived: true)
+          update_project(project, user, archived: false)
         end
       end
     end