diff --git a/validator/node_manager.py b/validator/node_manager.py
index 2477897..2fa919c 100644
--- a/validator/node_manager.py
+++ b/validator/node_manager.py
@@ -235,11 +235,83 @@ async def remove_disconnected_nodes(self):
                 )
                 keys_to_delete.append(hotkey)
 
-        logger.info(f"Deleteing keys from connected nodes: {keys_to_delete}")
+        logger.info(f"Deleting keys from connected nodes: {keys_to_delete}")
         for hotkey in keys_to_delete:
+            # Get TEE addresses before clearing so we can remove from masa-tee-api
+            tee_addresses = self.validator.routing_table.get_miner_addresses(hotkey)
+            
+            # Remove each TEE address from the masa-tee-api
+            for address, _ in tee_addresses:
+                await self._remove_tee_worker_from_api(address, hotkey)
+            
             del self.connected_nodes[hotkey]
             self.validator.routing_table.clear_miner(hotkey)
 
+    async def _remove_tee_worker_from_api(self, address: str, hotkey: str) -> bool:
+        """
+        Remove a TEE worker from the MASA TEE API when a miner deregisters.
+        
+        Args:
+            address: The TEE worker address to remove
+            hotkey: The hotkey of the deregistered miner (for logging)
+            
+        Returns:
+            True if removal was successful, False otherwise
+        """
+        masa_tee_api = os.getenv("MASA_TEE_API", "")
+        masa_tee_api_key = os.getenv("MASA_TEE_API_KEY", "")
+        
+        if not masa_tee_api:
+            logger.debug(
+                f"MASA_TEE_API not configured, skipping TEE worker removal for {address}"
+            )
+            return False
+            
+        if not masa_tee_api_key:
+            logger.debug(
+                f"MASA_TEE_API_KEY not configured, skipping TEE worker removal for {address}"
+            )
+            return False
+        
+        try:
+            base_url = masa_tee_api.rstrip("/")
+            api_endpoint = f"{base_url}/remove-tee-worker"
+            payload = {"address": address}
+            headers = {"X-API-Key": masa_tee_api_key}
+            
+            logger.info(
+                f"Removing TEE worker from MASA API: {address} (hotkey: {hotkey})"
+            )
+            
+            response = await self.validator.http_client_manager.client.post(
+                api_endpoint, json=payload, headers=headers, timeout=10.0
+            )
+            
+            if response.status_code == 200:
+                logger.info(
+                    f"Successfully removed TEE worker from MASA API: {address}"
+                )
+                return True
+            elif response.status_code == 404:
+                logger.debug(
+                    f"TEE worker not found in MASA API (already removed?): {address}"
+                )
+                return True
+            else:
+                logger.warning(
+                    f"Failed to remove TEE worker from MASA API: "
+                    f"{response.status_code} - {response.text}"
+                )
+                return False
+                
+        except asyncio.CancelledError:
+            raise
+        except Exception as e:
+            logger.error(
+                f"Error removing TEE worker from MASA API: {address} - {str(e)}"
+            )
+            return False
+
     async def send_custom_message(self, node_hotkey: str, message: str) -> None:
         """
         Send a custom message to a specific miner.
diff --git a/validator/weights.py b/validator/weights.py
index d52db13..22dedd1 100644
--- a/validator/weights.py
+++ b/validator/weights.py
@@ -352,7 +352,7 @@ def _get_delta_node_data(self, telemetry_data: List[NodeData]) -> List[NodeData]
 
                 # Extract platform metrics from delta stats
                 delta_platform_metrics = (
-                    platform_manager.extract_platform_metrics_from_stats(
+                    self.platform_manager.extract_platform_metrics_from_stats(
                         delta_stats_json
                     )
                 )
@@ -381,7 +381,7 @@ def _get_delta_node_data(self, telemetry_data: List[NodeData]) -> List[NodeData]
                 for (
                     platform_name,
                     platform_config,
-                ) in platform_manager.get_all_platforms().items():
+                ) in self.platform_manager.get_all_platforms().items():
                     for error_metric in platform_config.error_metrics:
                         raw_field = platform_config.get_raw_field_name(error_metric)
                         total_errors += delta_stats_json.get(raw_field, 0)