diff --git a/packages/cli/src/workflows/workflow.service.ts b/packages/cli/src/workflows/workflow.service.ts
index fc0e7894fb8..3e9ae97b5cd 100644
--- a/packages/cli/src/workflows/workflow.service.ts
+++ b/packages/cli/src/workflows/workflow.service.ts
@@ -265,6 +265,10 @@ export class WorkflowService {
 			);
 		}
 
+		if (workflow.isArchived) {
+			throw new BadRequestError('Cannot update an archived workflow.');
+		}
+
 		if (!forceSave && expectedChecksum) {
 			await this._detectConflicts(workflow, expectedChecksum);
 		}
@@ -533,6 +537,10 @@ export class WorkflowService {
 			);
 		}
 
+		if (workflow.isArchived) {
+			throw new BadRequestError('Cannot activate an archived workflow.');
+		}
+
 		const versionIdToActivate = options?.versionId ?? workflow.versionId;
 		const wasActive = workflow.activeVersionId !== null;
 
diff --git a/packages/cli/test/integration/workflows/workflows.controller.test.ts b/packages/cli/test/integration/workflows/workflows.controller.test.ts
index 56c07643293..281003dcc8f 100644
--- a/packages/cli/test/integration/workflows/workflows.controller.test.ts
+++ b/packages/cli/test/integration/workflows/workflows.controller.test.ts
@@ -3300,6 +3300,24 @@ describe('PATCH /workflows/:workflowId', () => {
 		expect(activeWorkflowManagerLike.add).not.toHaveBeenCalled();
 	});
 
+	test('should not update an archived workflow', async () => {
+		const workflow = await createWorkflowWithHistory({ isArchived: true }, owner);
+
+		const response = await authOwnerAgent
+			.patch(`/workflows/${workflow.id}`)
+			.send({
+				name: 'Updated Name',
+			})
+			.expect(400);
+
+		expect(response.body.message).toBe('Cannot update an archived workflow.');
+
+		const updatedWorkflow = await workflowRepository.findById(workflow.id);
+		expect(updatedWorkflow).not.toBeNull();
+		expect(updatedWorkflow!.name).toBe(workflow.name);
+		expect(updatedWorkflow!.isArchived).toBe(true);
+	});
+
 	describe('Security: Mass Assignment Protection on Update', () => {
 		test.each([
 			{
@@ -3805,6 +3823,23 @@ describe('POST /workflows/:workflowId/activate', () => {
 			workflowId: workflow.id,
 		});
 	});
+
+	test('should not activate an archived workflow', async () => {
+		const workflow = await createWorkflowWithHistory({ isArchived: true }, owner);
+
+		const response = await authOwnerAgent
+			.post(`/workflows/${workflow.id}/activate`)
+			.send({ versionId: workflow.versionId })
+			.expect(400);
+
+		expect(response.body.message).toBe('Cannot activate an archived workflow.');
+		expect(activeWorkflowManagerLike.add).not.toHaveBeenCalled();
+
+		const updatedWorkflow = await workflowRepository.findById(workflow.id);
+		expect(updatedWorkflow).not.toBeNull();
+		expect(updatedWorkflow!.active).toBe(false);
+		expect(updatedWorkflow!.activeVersionId).toBeNull();
+	});
 });
 
 describe('POST /workflows/:workflowId/deactivate', () => {