diff --git a/doc/api/graphql/reference/index.md b/doc/api/graphql/reference/index.md
index da2133e1f37b4c5721321b67efbdc7c942144419..41584278305479a773234c653a80578d9726512f 100644
--- a/doc/api/graphql/reference/index.md
+++ b/doc/api/graphql/reference/index.md
@@ -1502,6 +1502,7 @@ Input type: `DastProfileUpdateInput`
 | ---- | ---- | ----------- |
 | <a id="mutationdastprofileupdatebranchname"></a>`branchName` | [`String`](#string) | Associated branch. |
 | <a id="mutationdastprofileupdateclientmutationid"></a>`clientMutationId` | [`String`](#string) | A unique identifier for the client performing the mutation. |
+| <a id="mutationdastprofileupdatedastprofileschedule"></a>`dastProfileSchedule` | [`DastProfileScheduleInput`](#dastprofilescheduleinput) | Represents a DAST profile schedule. Results in an error if `dast_on_demand_scans_scheduler` feature flag is disabled. |
 | <a id="mutationdastprofileupdatedastscannerprofileid"></a>`dastScannerProfileId` | [`DastScannerProfileID`](#dastscannerprofileid) | ID of the scanner profile to be associated. |
 | <a id="mutationdastprofileupdatedastsiteprofileid"></a>`dastSiteProfileId` | [`DastSiteProfileID`](#dastsiteprofileid) | ID of the site profile to be associated. |
 | <a id="mutationdastprofileupdatedescription"></a>`description` | [`String`](#string) | Description of the profile. Defaults to an empty string. |
diff --git a/ee/app/graphql/mutations/dast/profiles/update.rb b/ee/app/graphql/mutations/dast/profiles/update.rb
index c0a266351ad88573346a2993747e8546885c21a1..dc695eb4fafe5d4eb57e84d2b1b467e0573caf6b 100644
--- a/ee/app/graphql/mutations/dast/profiles/update.rb
+++ b/ee/app/graphql/mutations/dast/profiles/update.rb
@@ -30,6 +30,10 @@ class Update < BaseMutation
                  required: true,
                  description: 'Project the profile belongs to.'
 
+        argument :dast_profile_schedule, ::Types::Dast::ProfileScheduleInputType,
+              required: false,
+              description: 'Represents a DAST profile schedule. Results in an error if `dast_on_demand_scans_scheduler` feature flag is disabled.'
+
         argument :name, GraphQL::Types::String,
                  required: false,
                  description: 'Name of the profile.'
@@ -58,9 +62,9 @@ class Update < BaseMutation
 
         authorize :create_on_demand_dast_scan
 
-        def resolve(full_path:, id:, name:, description:, branch_name: nil, dast_site_profile_id: nil, dast_scanner_profile_id: nil, run_after_update: false)
+        def resolve(full_path:, id:, name:, description:, branch_name: nil, dast_scanner_profile_id: nil, run_after_update: false, **args)
           project = authorized_find!(full_path)
-          raise Gitlab::Graphql::Errors::ResourceNotAvailable, 'Feature disabled' unless allowed?(project)
+          raise Gitlab::Graphql::Errors::ResourceNotAvailable, 'Feature disabled' unless allowed?(args[:dast_profile_schedule], project)
 
           dast_profile = find_dast_profile(project.id, id)
           authorize!(dast_profile)
@@ -70,8 +74,9 @@ def resolve(full_path:, id:, name:, description:, branch_name: nil, dast_site_pr
             name: name,
             description: description,
             branch_name: branch_name,
-            dast_site_profile_id: as_model_id(SiteProfileID, dast_site_profile_id),
+            dast_site_profile_id: as_model_id(SiteProfileID, args[:dast_site_profile_id]),
             dast_scanner_profile_id: as_model_id(ScannerProfileID, dast_scanner_profile_id),
+            dast_profile_schedule: args[:dast_profile_schedule],
             run_after_update: run_after_update
           }.compact
 
@@ -86,8 +91,14 @@ def resolve(full_path:, id:, name:, description:, branch_name: nil, dast_site_pr
 
         private
 
-        def allowed?(project)
-          project.feature_available?(:security_on_demand_scans)
+        def allowed?(dast_profile_schedule, project)
+          scheduler_flag_enabled?(dast_profile_schedule, project)
+        end
+
+        def scheduler_flag_enabled?(dast_profile_schedule, project)
+          return true unless dast_profile_schedule
+
+          Feature.enabled?(:dast_on_demand_scans_scheduler, project, default_enabled: :yaml)
         end
 
         def as_model_id(klass, value)
diff --git a/ee/app/services/app_sec/dast/profile_schedules/audit/update_service.rb b/ee/app/services/app_sec/dast/profile_schedules/audit/update_service.rb
new file mode 100644
index 0000000000000000000000000000000000000000..59f533a68210e99336db642be3d532bd61e2e4d0
--- /dev/null
+++ b/ee/app/services/app_sec/dast/profile_schedules/audit/update_service.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+module AppSec
+  module Dast
+    module ProfileSchedules
+      module Audit
+        class UpdateService < BaseProjectService
+          def execute
+            params[:new_params].each do |property, new_value|
+              old_value = params[:old_params][property]
+
+              next if old_value == new_value
+
+              ::Gitlab::Audit::Auditor.audit(
+                name: 'dast_profile_schedule_update',
+                author: current_user,
+                scope: project,
+                target: params[:dast_profile_schedule],
+                message: "Changed DAST profile schedule #{property} from #{old_value} to #{new_value}"
+              )
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/ee/app/services/app_sec/dast/profiles/update_service.rb b/ee/app/services/app_sec/dast/profiles/update_service.rb
index 4b4cb9e7d127c821354624ceba63040278ea1608..93638826aa55ac9f16977fa03f4c8be58183e76a 100644
--- a/ee/app/services/app_sec/dast/profiles/update_service.rb
+++ b/ee/app/services/app_sec/dast/profiles/update_service.rb
@@ -9,33 +9,60 @@ class UpdateService < BaseContainerService
         def execute
           return unauthorized unless allowed?
           return error('Profile parameter missing') unless dast_profile
+          return error('Dast Profile Schedule not found') if update_schedule? && !schedule
 
-          auditor = AppSec::Dast::Profiles::Audit::UpdateService.new(container: container, current_user: current_user, params: {
-            dast_profile: dast_profile,
-            new_params: dast_profile_params,
-            old_params: dast_profile.attributes.symbolize_keys
-          })
+          build_auditors!
+
+          ApplicationRecord.transaction do
+            dast_profile.update!(dast_profile_params)
 
-          return error(dast_profile.errors.full_messages) unless dast_profile.update(dast_profile_params)
+            update_schedule if update_schedule?
+          end
 
-          auditor.execute
+          execute_auditors!
 
-          return success(dast_profile: dast_profile, pipeline_url: nil) unless params[:run_after_update]
+          unless params[:run_after_update]
+            return success(
+              dast_profile: dast_profile,
+              pipeline_url: nil,
+              dast_profile_schedule: schedule
+            )
+          end
 
           response = create_scan(dast_profile)
 
           return error(response.message) if response.error?
 
-          success(dast_profile: dast_profile, pipeline_url: response.payload.fetch(:pipeline_url))
+          success(
+            dast_profile: dast_profile,
+            pipeline_url: response.payload.fetch(:pipeline_url),
+            dast_profile_schedule: schedule
+          )
+        rescue ActiveRecord::RecordInvalid => err
+          error(err.record.errors.full_messages)
         end
 
         private
 
+        attr_reader :auditors
+
         def allowed?
           container.licensed_feature_available?(:security_on_demand_scans) &&
             can?(current_user, :create_on_demand_dast_scan, container)
         end
 
+        def update_schedule?
+          schedule_input_params.present?
+        end
+
+        def update_schedule
+          schedule.update!(schedule_input_params)
+        end
+
+        def schedule
+          @schedule ||= dast_profile.dast_profile_schedule
+        end
+
         def error(message, opts = {})
           ServiceResponse.error(message: message, **opts)
         end
@@ -56,6 +83,35 @@ def dast_profile_params
           params.slice(:dast_site_profile_id, :dast_scanner_profile_id, :name, :description, :branch_name)
         end
 
+        def schedule_input_params
+          # params[:dast_profile_schedule] is `Types::Dast::ProfileScheduleInputType` object.
+          # Using to_h method to convert object into equivalent hash.
+          @schedule_input_params ||= params[:dast_profile_schedule]&.to_h
+        end
+
+        def build_auditors!
+          @auditors = [
+              AppSec::Dast::Profiles::Audit::UpdateService.new(container: container, current_user: current_user, params: {
+              dast_profile: dast_profile,
+              new_params: dast_profile_params,
+              old_params: dast_profile.attributes.symbolize_keys
+            })
+          ]
+
+          if schedule_input_params
+            @auditors <<
+              AppSec::Dast::ProfileSchedules::Audit::UpdateService.new(project: container, current_user: current_user, params: {
+                dast_profile_schedule: schedule,
+                new_params: schedule_input_params,
+                old_params: schedule.attributes.symbolize_keys
+              })
+          end
+        end
+
+        def execute_auditors!
+          auditors.map(&:execute)
+        end
+
         def create_scan(dast_profile)
           ::DastOnDemandScans::CreateService.new(
             container: container,
diff --git a/ee/spec/graphql/mutations/dast/profiles/update_spec.rb b/ee/spec/graphql/mutations/dast/profiles/update_spec.rb
index 534bdf32f8064cb55d68732b47ee50a07a2ece50..b5a7eedc121286f171ea515338fa3be4eb498990 100644
--- a/ee/spec/graphql/mutations/dast/profiles/update_spec.rb
+++ b/ee/spec/graphql/mutations/dast/profiles/update_spec.rb
@@ -11,6 +11,8 @@
   let_it_be(:new_dast_site_profile) { create(:dast_site_profile, project: project) }
   let_it_be(:new_dast_scanner_profile) { create(:dast_scanner_profile, project: project) }
 
+  let(:dast_profile_schedule_attrs) { nil }
+
   let(:dast_profile_gid) { dast_profile.to_global_id }
   let(:run_after_update) { false }
 
@@ -22,7 +24,8 @@
       branch_name: project.default_branch,
       dast_site_profile_id: global_id_of(new_dast_site_profile),
       dast_scanner_profile_id: global_id_of(new_dast_scanner_profile),
-      run_after_update: run_after_update
+      run_after_update: run_after_update,
+      dast_profile_schedule: dast_profile_schedule_attrs
     }
   end
 
@@ -81,6 +84,61 @@
           end
         end
 
+        context 'when associated dast profile schedule is present' do
+          before do
+            create(:dast_profile_schedule, dast_profile: dast_profile)
+          end
+
+          context 'when dast_profile_schedule param is present' do
+            let(:new_dast_profile_schedule) { attributes_for(:dast_profile_schedule) }
+
+            subject do
+              mutation.resolve(**params.merge(
+                full_path: project.full_path,
+                dast_profile_schedule: new_dast_profile_schedule
+              ))
+            end
+
+            context 'when dast_on_demand_scans_scheduler feature is enabled' do
+              it 'updates the profile schedule' do
+                subject
+
+                updated_schedule = dast_profile.reload.dast_profile_schedule
+
+                aggregate_failures do
+                  expect(updated_schedule.timezone).to eq(new_dast_profile_schedule[:timezone])
+                  expect(updated_schedule.starts_at.to_i).to eq(new_dast_profile_schedule[:starts_at].to_i)
+                  expect(updated_schedule.cadence).to eq(new_dast_profile_schedule[:cadence].stringify_keys)
+                end
+              end
+            end
+
+            context 'when dast_on_demand_scans_scheduler feature is disabled' do
+              let(:dast_profile_schedule_attrs) { attributes_for(:dast_profile_schedule) }
+
+              before do
+                stub_feature_flags(dast_on_demand_scans_scheduler: false)
+              end
+
+              it 'returns the dast_profile_schedule' do
+                expect { subject }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+              end
+            end
+          end
+
+          context 'when dast_profile_schedule param is not passed' do
+            context 'when dast_on_demand_scans_scheduler feature is enabled' do
+              it 'does not updates the profile schedule' do
+                schedule_before_update = dast_profile.dast_profile_schedule
+
+                subject
+
+                expect(schedule_before_update).to eq(dast_profile.dast_profile_schedule.reload)
+              end
+            end
+          end
+        end
+
         context 'when run_after_update=true' do
           let(:run_after_update) { true }
 
diff --git a/ee/spec/services/app_sec/dast/profile_schedules/audit/update_service_spec.rb b/ee/spec/services/app_sec/dast/profile_schedules/audit/update_service_spec.rb
new file mode 100644
index 0000000000000000000000000000000000000000..afdfc472ccb9579a36ea1ab7a852bb21a24a3c7b
--- /dev/null
+++ b/ee/spec/services/app_sec/dast/profile_schedules/audit/update_service_spec.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe AppSec::Dast::ProfileSchedules::Audit::UpdateService do
+  let_it_be(:project) { create(:project) }
+  let_it_be(:user) { create(:user) }
+  let_it_be(:dast_profile_schedule) { create(:dast_profile_schedule, owner: user) }
+
+  describe '#execute' do
+    it 'creates audit events for the changed properties', :aggregate_failures do
+      auditor = described_class.new(project: project, current_user: user, params: {
+        dast_profile_schedule: dast_profile_schedule,
+        new_params: { starts_at: Date.tomorrow },
+        old_params: { starts_at: Date.today }
+      })
+
+      auditor.execute
+
+      audit_event = AuditEvent.find_by(author_id: user.id)
+      expect(audit_event.author).to eq(user)
+      expect(audit_event.entity).to eq(project)
+      expect(audit_event.target_id).to eq(dast_profile_schedule.id)
+      expect(audit_event.target_type).to eq('Dast::ProfileSchedule')
+      expect(audit_event.details).to eq({
+        author_name: user.name,
+        custom_message: "Changed DAST profile schedule starts_at from #{Date.today} to #{Date.tomorrow}",
+        target_id: dast_profile_schedule.id,
+        target_type: 'Dast::ProfileSchedule',
+        target_details: user.name
+      })
+    end
+  end
+end
diff --git a/ee/spec/services/app_sec/dast/profiles/update_service_spec.rb b/ee/spec/services/app_sec/dast/profiles/update_service_spec.rb
index 0c25dc06c44fb82bbacb1fefae2d89b0bac06994..ea9b3e1d21a119d0936eb4de794a1200855316cb 100644
--- a/ee/spec/services/app_sec/dast/profiles/update_service_spec.rb
+++ b/ee/spec/services/app_sec/dast/profiles/update_service_spec.rb
@@ -76,6 +76,52 @@
           end
         end
 
+        context 'with dast_profile_schedule param' do
+          let_it_be(:time_zone) { Time.zone.tzinfo.name }
+
+          let(:params) do
+            default_params.merge(
+              dast_profile_schedule: {
+                active: false,
+                starts_at: Time.zone.now + 10.days,
+                timezone: time_zone,
+                cadence: { unit: 'month', duration: 1 }
+              }
+            )
+          end
+
+          context 'when associated schedule is not present' do
+            it 'communicates failure for dast_profile_schedule' do
+              aggregate_failures do
+                expect(dast_profile.dast_profile_schedule).to be nil
+                expect(subject.status).to eq(:error)
+                expect(subject.message).to include('Dast Profile Schedule not found')
+              end
+            end
+          end
+
+          context 'when associated schedule is present' do
+            before do
+              create(:dast_profile_schedule, dast_profile: dast_profile)
+            end
+
+            it 'updates the dast profile schedule' do
+              updated_schedule = subject.payload[:dast_profile_schedule].reload
+
+              aggregate_failures do
+                expect(updated_schedule.active).to eq(params[:dast_profile_schedule][:active])
+                expect(updated_schedule.starts_at.to_i).to eq(params[:dast_profile_schedule][:starts_at].to_i)
+                expect(updated_schedule.timezone).to eq(params[:dast_profile_schedule][:timezone])
+                expect(updated_schedule.cadence).to eq(params[:dast_profile_schedule][:cadence].stringify_keys)
+              end
+            end
+
+            it 'creates the audit event' do
+              expect { subject }.to change { AuditEvent.where(target_id: dast_profile.dast_profile_schedule.id).count }
+            end
+          end
+        end
+
         it 'audits the update', :aggregate_failures do
           old_profile_attrs = {
             description: dast_profile.description,