diff --git a/db/post_migrate/20231217053910_remove_due_date_sourcing_milestone_id_column_from_vulnerabilities.rb b/db/post_migrate/20231217053910_remove_due_date_sourcing_milestone_id_column_from_vulnerabilities.rb
new file mode 100644
index 0000000000000000000000000000000000000000..5cd41dff0ef433916ef20e23b170dad47c61932e
--- /dev/null
+++ b/db/post_migrate/20231217053910_remove_due_date_sourcing_milestone_id_column_from_vulnerabilities.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+class RemoveDueDateSourcingMilestoneIdColumnFromVulnerabilities < Gitlab::Database::Migration[2.2]
+  disable_ddl_transaction!
+
+  milestone '16.8'
+
+  def up
+    with_lock_retries do
+      remove_column :vulnerabilities, :due_date_sourcing_milestone_id
+    end
+  end
+
+  def down
+    unless column_exists?(:vulnerabilities, :due_date_sourcing_milestone_id)
+      add_column :vulnerabilities, :due_date_sourcing_milestone_id, :bigint
+    end
+
+    # Add back index and constraint that were dropped in `up`
+    add_concurrent_index(:vulnerabilities, :due_date_sourcing_milestone_id)
+    add_concurrent_foreign_key(:vulnerabilities, :milestones, column: :due_date_sourcing_milestone_id,
+      on_delete: :nullify)
+  end
+end
diff --git a/db/schema_migrations/20231217053910 b/db/schema_migrations/20231217053910
new file mode 100644
index 0000000000000000000000000000000000000000..ce8d6436f44a3c15ef0d11a4a9d25a2858644037
--- /dev/null
+++ b/db/schema_migrations/20231217053910
@@ -0,0 +1 @@
+bf5f9ca0584e043c39ca57a9664241900c35cda921c94e0df2728b435137a066
\ No newline at end of file
diff --git a/db/structure.sql b/db/structure.sql
index d7226ae98c3b475597ec8e3bd9f5d67b84289348..cf1a175ae95dc39e02ce450a95aa843538b04ec1 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -24901,7 +24901,6 @@ CREATE TABLE vulnerabilities (
     description text,
     description_html text,
     start_date_sourcing_milestone_id bigint,
-    due_date_sourcing_milestone_id bigint,
     state smallint DEFAULT 1 NOT NULL,
     severity smallint NOT NULL,
     severity_overridden boolean DEFAULT false,
@@ -35089,8 +35088,6 @@ CREATE INDEX index_vulnerabilities_on_detected_at_and_id ON vulnerabilities USIN
 
 CREATE INDEX index_vulnerabilities_on_dismissed_by_id ON vulnerabilities USING btree (dismissed_by_id);
 
-CREATE INDEX index_vulnerabilities_on_due_date_sourcing_milestone_id ON vulnerabilities USING btree (due_date_sourcing_milestone_id);
-
 CREATE INDEX index_vulnerabilities_on_epic_id ON vulnerabilities USING btree (epic_id);
 
 CREATE INDEX index_vulnerabilities_on_finding_id ON vulnerabilities USING btree (finding_id);
@@ -37791,9 +37788,6 @@ ALTER TABLE ONLY catalog_resource_versions
 ALTER TABLE ONLY issue_customer_relations_contacts
     ADD CONSTRAINT fk_7b92f835bb FOREIGN KEY (contact_id) REFERENCES customer_relations_contacts(id) ON DELETE CASCADE;
 
-ALTER TABLE ONLY vulnerabilities
-    ADD CONSTRAINT fk_7c5bb22a22 FOREIGN KEY (due_date_sourcing_milestone_id) REFERENCES milestones(id) ON DELETE SET NULL;
-
 ALTER TABLE ONLY ssh_signatures
     ADD CONSTRAINT fk_7d2f93996c FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE;
 
diff --git a/ee/spec/models/ee/vulnerability_spec.rb b/ee/spec/models/ee/vulnerability_spec.rb
index a985c46b5935e104e4c34a955dd2971d3113e998..02359eb4457fe58d8b423c516c7643f01185ee75 100644
--- a/ee/spec/models/ee/vulnerability_spec.rb
+++ b/ee/spec/models/ee/vulnerability_spec.rb
@@ -29,7 +29,7 @@
   let_it_be(:vulnerability) { create(:vulnerability, :sast, :confirmed, :low, :with_state_transition, project: project) }
   let_it_be(:finding) { create(:vulnerabilities_finding, vulnerability: vulnerability) }
 
-  it { is_expected.to have_locked_schema('acd1e63fcaaeba6f545d3420da5f3407914227b57ff584bb98b5c3f2e0411877').reference('https://gitlab.com/gitlab-org/gitlab/-/issues/349315') }
+  it { is_expected.to have_locked_schema('f8dc84021fa4394728e9dbb25cfa87daf143ff13d49545c082dfceb65bec65d8').reference('https://gitlab.com/gitlab-org/gitlab/-/issues/349315') }
 
   it_behaves_like 'vulnerability and finding shared examples' do
     let(:transformer_method) { :itself }