diff --git a/water-api/src/routes/concentrator.routes.ts b/water-api/src/routes/concentrator.routes.ts
index 2bd8c64..086c79d 100644
--- a/water-api/src/routes/concentrator.routes.ts
+++ b/water-api/src/routes/concentrator.routes.ts
@@ -38,7 +38,7 @@ router.post(
 
 /**
  * PUT /concentrators/:id
- * Update an existing concentrator
+ * Update an existing concentrator (full update)
  * Body: { serial_number?, name?, project_id?, location?, status?, ip_address?, firmware_version? }
  * Protected endpoint - requires authentication
  */
@@ -49,6 +49,19 @@ router.put(
   concentratorController.update
 );
 
+/**
+ * PATCH /concentrators/:id
+ * Update an existing concentrator (partial update)
+ * Body: { serial_number?, name?, project_id?, location?, status?, ip_address?, firmware_version? }
+ * Protected endpoint - requires authentication
+ */
+router.patch(
+  '/:id',
+  authenticateToken,
+  validateUpdateConcentrator,
+  concentratorController.update
+);
+
 /**
  * DELETE /concentrators/:id
  * Delete a concentrator (fails if gateways are associated)