diff --git a/ocw/lib/ec2.py b/ocw/lib/ec2.py
index a14b258b..dab2b383 100644
--- a/ocw/lib/ec2.py
+++ b/ocw/lib/ec2.py
@@ -253,10 +253,18 @@ def delete_routing_tables(self, region: str, vpc_id: str) -> None:
                     if self.dry_run:
                         self.log_info(f"{route_table['RouteTableId']} route will not be deleted due to dry_run mode")
                         self.log_dbg(route)
-                    else:
+                    elif 'DestinationCidrBlock' in route:
+                        self.log_info(f"Delete route {route_table['RouteTableId']}")
+                        self.log_dbg(route)
+                        self.ec2_client(region).delete_route(RouteTableId=route_table['RouteTableId'],
+                                                             DestinationCidrBlock=route['DestinationCidrBlock'])
+                    elif 'DestinationIpv6CidrBlock' in route:
                         self.log_info(f"Delete route {route_table['RouteTableId']}")
                         self.log_dbg(route)
-                        self.ec2_client(region).delete_route(RouteTableId=route_table['RouteTableId'])
+                        self.ec2_client(region).delete_route(RouteTableId=route_table['RouteTableId'],
+                                                             DestinationIpv6CidrBlock=route['DestinationIpv6CidrBlock'])
+                    else:
+                        raise RuntimeError(f'Failed to delete {route}')
             if route_table['Associations'] == []:
                 if self.dry_run:
                     self.log_info(f"{route_table['RouteTableId']} routing table will not be deleted due to dry_run mode")
diff --git a/tests/test_ec2.py b/tests/test_ec2.py
index c401b09e..947d2984 100644
--- a/tests/test_ec2.py
+++ b/tests/test_ec2.py
@@ -170,7 +170,7 @@ def disassociate_route_table(self, AssociationId):
     def describe_route_tables(self, Filters):
         return MockedEC2Client.routing_tables
 
-    def delete_route(self, RouteTableId):
+    def delete_route(self, RouteTableId, DestinationCidrBlock = None, DestinationIpv6CidrBlock = None):
         if RouteTableId == '2':
             MockedEC2Client.delete_route_called = True