diff --git a/erpnext/regional/doctype/e_invoice_request_log/e_invoice_request_log.py b/erpnext/regional/doctype/e_invoice_request_log/e_invoice_request_log.py
index 38fe308..c89552d 100644
--- a/erpnext/regional/doctype/e_invoice_request_log/e_invoice_request_log.py
+++ b/erpnext/regional/doctype/e_invoice_request_log/e_invoice_request_log.py
@@ -2,8 +2,6 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
-from __future__ import unicode_literals
-
 # import frappe
 from frappe.model.document import Document
 
diff --git a/erpnext/regional/doctype/e_invoice_settings/e_invoice_settings.py b/erpnext/regional/doctype/e_invoice_settings/e_invoice_settings.py
index 70ec2ed..342d583 100644
--- a/erpnext/regional/doctype/e_invoice_settings/e_invoice_settings.py
+++ b/erpnext/regional/doctype/e_invoice_settings/e_invoice_settings.py
@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
-from __future__ import unicode_literals
 
 import frappe
 from frappe import _
diff --git a/erpnext/regional/doctype/e_invoice_user/e_invoice_user.py b/erpnext/regional/doctype/e_invoice_user/e_invoice_user.py
index a0fe399..4e0e89c 100644
--- a/erpnext/regional/doctype/e_invoice_user/e_invoice_user.py
+++ b/erpnext/regional/doctype/e_invoice_user/e_invoice_user.py
@@ -2,8 +2,6 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
-from __future__ import unicode_literals
-
 # import frappe
 from frappe.model.document import Document
 
diff --git a/erpnext/regional/india/e_invoice/utils.py b/erpnext/regional/india/e_invoice/utils.py
index 1ae24e1..e3f7e90 100644
--- a/erpnext/regional/india/e_invoice/utils.py
+++ b/erpnext/regional/india/e_invoice/utils.py
@@ -2,8 +2,6 @@
 # Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
-from __future__ import unicode_literals
-
 import base64
 import io
 import json
@@ -14,7 +12,6 @@
 
 import frappe
 import jwt
-import six
 from frappe import _, bold
 from frappe.core.page.background_jobs.background_jobs import get_info
 from frappe.integrations.utils import make_get_request, make_post_request
@@ -39,7 +36,7 @@
 
 @frappe.whitelist()
 def validate_eligibility(doc):
-	if isinstance(doc, six.string_types):
+	if isinstance(doc, str):
 		doc = json.loads(doc)
 
 	invalid_doctype = doc.get('doctype') != 'Sales Invoice'
@@ -507,7 +504,7 @@
 	)
 
 def log_error(data=None):
-	if isinstance(data, six.string_types):
+	if isinstance(data, str):
 		data = json.loads(data)
 
 	seperator = "--" * 50
diff --git a/erpnext/regional/report/e_invoice_summary/e_invoice_summary.py b/erpnext/regional/report/e_invoice_summary/e_invoice_summary.py
index 5cbb455..2110c44 100644
--- a/erpnext/regional/report/e_invoice_summary/e_invoice_summary.py
+++ b/erpnext/regional/report/e_invoice_summary/e_invoice_summary.py
@@ -1,8 +1,6 @@
 # Copyright (c) 2013, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
-from __future__ import unicode_literals
-
 import frappe
 from frappe import _