diff --git a/water-api/src/routes/meter.routes.ts b/water-api/src/routes/meter.routes.ts
index 5ff07db..cefe66e 100644
--- a/water-api/src/routes/meter.routes.ts
+++ b/water-api/src/routes/meter.routes.ts
@@ -41,7 +41,7 @@ router.post('/', authenticateToken, validateCreateMeter, meterController.create)
 
 /**
  * PUT /meters/:id
- * Protected endpoint - update an existing meter
+ * Protected endpoint - update an existing meter (full update)
  * Headers: Authorization: Bearer <accessToken>
  * Body: { serial_number?: string, name?: string, project_id?: string, device_id?: string,
  *         area_name?: string, location?: string, meter_type?: string, status?: string,
@@ -50,6 +50,17 @@ router.post('/', authenticateToken, validateCreateMeter, meterController.create)
  */
 router.put('/:id', authenticateToken, validateUpdateMeter, meterController.update);
 
+/**
+ * PATCH /meters/:id
+ * Protected endpoint - update an existing meter (partial update)
+ * Headers: Authorization: Bearer <accessToken>
+ * Body: { serial_number?: string, name?: string, project_id?: string, device_id?: string,
+ *         area_name?: string, location?: string, meter_type?: string, status?: string,
+ *         installation_date?: string }
+ * Response: { success: true, data: Meter }
+ */
+router.patch('/:id', authenticateToken, validateUpdateMeter, meterController.update);
+
 /**
  * DELETE /meters/:id
  * Protected endpoint - delete a meter (requires admin role)