Update an object - SOAP API /Selenium Java

I've faced an issue. I'm trying to create a method to update a requirement in Salesforce. (I'm using Selenium - Java) and I have the following error. " The method update(com.sforce.soap.enterprise.sobject.SObject[]) in the type EnterpriseConnection is not applicable for the arguments (com.sforce.async.SObject[]) Type mismatch: cannot convert from Requirement__c to SObject".

 static EnterpriseConnection connection = GetConnection();

    private static EnterpriseConnection GetConnection()
    {
    String username = "aaa";
    String password = "aaa";
    String authEndPoint = "aaa";

    try
    {
    ConnectorConfig config = new ConnectorConfig();
    config.setUsername(username);
    config.setPassword(password);
    config.setAuthEndpoint(authEndPoint);

    return new EnterpriseConnection(config);
    }
    catch (ConnectionException ce)
    {
    ce.printStackTrace();
    }

    return null;
    }

    public static class forceLogin1
    {
          
    public boolean loginSample() {
           boolean success = false;
           String username = "aaa";
           String password = "aaa!";
           String authEndPoint = "aaa";
         
           try {
              ConnectorConfig config = new ConnectorConfig();
              config.setUsername(username);
              config.setPassword(password);        
         
              System.out.println("AuthEndPoint: " + authEndPoint);
              config.setAuthEndpoint(authEndPoint);
         
              EnterpriseConnection connection = new EnterpriseConnection(config);
         
            
              com.sforce.soap.enterprise.GetUserInfoResult userInfo = connection.getUserInfo();
              System.out.println("UserID: " + userInfo.getUserId());
              System.out.println("User Full Name: " + userInfo.getUserFullName());
              System.out.println("User Email: " + userInfo.getUserEmail());
              System.out.println();
              System.out.println("SessionID: " + config.getSessionId());
              System.out.println("Auth End Point: " + config.getAuthEndpoint());
              System.out
                    .println("Service End Point: " + config.getServiceEndpoint());
              System.out.println();
         
              success = true;
           } catch (ConnectionException ce) {
              ce.printStackTrace();
           }
         
           return success;
        }
    }
    
    public static void updateRequirements(String oppId) {
        
        try{  
        Requirement__c updateRequirement  = new Requirement__c();
    
           updateRequirement.setId(oppId);
           updateRequirement.setStatus__c("Pending");
           SaveResult[] results = connection
                    .update(new SObject[] { updateRequirement  });
           } 
    catch (ConnectionException ce) {
              ce.printStackTrace();
           }
        }

Imports:

import com.sforce.async.SObject;
import com.sforce.soap.enterprise.EnterpriseConnection;
import com.sforce.soap.enterprise.SaveResult;
import com.sforce.soap.enterprise.sobject.Requirement__c;
import com.sforce.ws.ConnectionException;
import com.sforce.ws.ConnectorConfig;

Can anyone help me with a solution? Great thanks