diff --git a/bitwardenBackup.py b/bitwardenBackup.py
index e0cdd2a..5f7364b 100644
--- a/bitwardenBackup.py
+++ b/bitwardenBackup.py
@@ -8,7 +8,7 @@ import getpass
 import logging
 import secrets
 import base64
-import optparse
+import argparse
 import hmac as pyhmac
 import datetime
 import time
@@ -303,31 +303,37 @@ def select_account(accounts, wording = "edit"):
 if __name__ == "__main__":
 
     # Build and parse arguments
-    parser = optparse.OptionParser(
+    parser = argparse.ArgumentParser(
         usage="%prog [options]",
         description="Run Bitwarden backup opteration.  This will produce an encrypted zip/tar with exported CSV, JSON, and attachements.")
-
-    parser.add_option(
+    parser.add_argument(
+        "-a",
+        "--accounts",
+        nargs="+",
+        dest="accounts_to_backup",
+        help="Accounts to backup instead of all accounts."
+    )
+    parser.add_argument(
         "-c",
         "--config",
         action="store_true",
         dest="config",
         help="Edit Bitwarden account configuration."
     )
-    parser.add_option (
+    parser.add_argument (
         "-v",
         "--verbose",
         action="store_true",
         dest="debug",
         help="Output debug/verbose info to the console for troubleshooting."
     )
-    parser.add_option (
+    parser.add_argument (
         "--no-encryption",
         action="store_true",
         dest="no_encrypt",
         help="Will only zip up export and will NOT encrypt anything."
     )
-    opts, args = parser.parse_args(sys.argv[1:])
+    opts = parser.parse_args()
 
     os_detected = platform.system()
     script_directory = os.path.dirname(os.path.realpath(__file__))
@@ -368,9 +374,7 @@ if __name__ == "__main__":
         print("SRM/sdelete.exe ({}) cannot be found. Please make sure it is installed and executable.".format(secure_delete_executable))
 
     client = client.ProxyKmipClient(config_file=pykmip_client_config_file)
-    client.open()
-    #print(encrypt(client, "test"))
-    
+    client.open()    
 
     if opts.config:
         while True:
@@ -442,7 +446,19 @@ if __name__ == "__main__":
         print("No configuration file found. Please run {} -c to configure your accounts.".format(script_name))
         sys.exit(-1)
     accounts = read_config_file(secrets_config_file)
-    emails = list(accounts)
+    emails_from_config_file = list(accounts)
+    if opts.accounts_to_backup:
+        emails_to_backup = list()
+        for email in opts.accounts_to_backup:
+            if email in emails_from_config_file:
+                emails_to_backup.append(email)
+        if len(emails_to_backup) > 0:
+            emails = emails_to_backup
+        else:
+            logger.error("None of the emails passed in are in the config file.")
+            sys.exit(1)
+    else:
+        emails = emails_from_config_file
     for email in emails:
         vault_password = accounts[email]['account_vault_password']
         os.environ["BW_CLIENTID"] = accounts[email]['account_api_client_id']
@@ -541,6 +557,6 @@ if __name__ == "__main__":
         logger.debug((subprocess.run([bitwarden_cli_executable, 'logout'], capture_output=True).stdout).decode())
     
     del accounts
-    del emails
+    del emails_from_config_file
     client.close()
     sys.exit(0)