diff --git a/pipenv/vendor/click_completion/__init__.py b/pipenv/vendor/click_completion/__init__.py
index 1443c8f..b849ae2 100644
--- a/pipenv/vendor/click_completion/__init__.py
+++ b/pipenv/vendor/click_completion/__init__.py
@@ -6,7 +6,13 @@ from __future__ import print_function, absolute_import
 import six
 
 from click import ParamType
-from enum import Enum
+if six.PY3:
+    try:
+        from enum import Enum
+    except ImportError:
+        from pipenv.vendor.backports.enum import Enum
+else:
+    from pipenv.vendor.backports.enum import Enum
 
 from click_completion.core import completion_configuration, get_code, install, shells, resolve_ctx, get_choices, \
     startswith, Shell
diff --git a/pipenv/vendor/click_completion/core.py b/pipenv/vendor/click_completion/core.py
index 2ede6ef..dc47d47 100644
--- a/pipenv/vendor/click_completion/core.py
+++ b/pipenv/vendor/click_completion/core.py
@@ -10,7 +10,14 @@ import subprocess
 
 import click
 from click import Option, Argument, MultiCommand, echo
-from enum import Enum
+import six
+if six.PY3:
+    try:
+        from enum import Enum
+    except ImportError:
+        from pipenv.vendor.backports.enum import Enum
+else:
+    from pipenv.vendor.backports.enum import Enum
 
 from click_completion.lib import resolve_ctx, split_args, single_quote, double_quote, get_auto_shell