diff --git a/docs/installation_win.rst b/docs/installation_win.rst
--- a/docs/installation_win.rst
+++ b/docs/installation_win.rst
@@ -17,11 +17,11 @@ To install on an older version of Window
 Step 1 -- Install Python
 ^^^^^^^^^^^^^^^^^^^^^^^^
 
-Install Python 2.x.y (x = 6 or 7). Latest version is recommended. If you need another version, they can run side by side.
+Install Python 2.7.x. Latest version is recommended. If you need another version, they can run side by side.
 
 .. warning:: Python 3.x is not supported.
 
-- Download Python 2.x.y from http://www.python.org/download/
+- Download Python 2.7.x from http://www.python.org/download/
 - Choose and click on the version
 - Click on "Windows X86-64 Installer" for x64 or "Windows x86 MSI installer" for Win32.
 - Disable UAC or run the installer with admin privileges. If you chose to disable UAC, do not forget to reboot afterwards.
diff --git a/docs/installation_win_old.rst b/docs/installation_win_old.rst
--- a/docs/installation_win_old.rst
+++ b/docs/installation_win_old.rst
@@ -60,8 +60,8 @@ choose "Visual C++ 2008 Express" when in
 Step 2 -- Install Python
 ^^^^^^^^^^^^^^^^^^^^^^^^
 
-Install Python 2.x.y (x = 6 or 7) x86 version (32-bit). DO NOT USE A 3.x version.
-Download Python 2.x.y from:
+Install Python 2.7.x x86 version (32-bit). DO NOT USE A 3.x version.
+Download Python 2.7.x from:
 http://www.python.org/download/
 
 Choose "Windows Installer" (32-bit version) not "Windows X86-64
diff --git a/kallithea/lib/compat.py b/kallithea/lib/compat.py
--- a/kallithea/lib/compat.py
+++ b/kallithea/lib/compat.py
@@ -41,15 +41,6 @@ formatted_json = functools.partial(json.
 
 
 #==============================================================================
-# unittest
-#==============================================================================
-if sys.version_info >= (2, 7):
-    import unittest
-else:
-    import unittest2 as unittest
-
-
-#==============================================================================
 # OrderedSet
 #==============================================================================
 from sqlalchemy.util import OrderedSet
diff --git a/kallithea/lib/vcs/utils/compat.py b/kallithea/lib/vcs/utils/compat.py
deleted file mode 100644
--- a/kallithea/lib/vcs/utils/compat.py
+++ /dev/null
@@ -1,14 +0,0 @@
-"""
-Various utilities to work with Python < 2.7.
-
-Those utilities may be deleted once ``vcs`` stops support for older Python
-versions.
-"""
-
-import sys
-import array
-
-if sys.version_info >= (2, 7):
-    unittest = __import__('unittest')
-else:
-    unittest = __import__('unittest2')
diff --git a/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -64,10 +64,6 @@ requirements = [
     "Click >= 7.0, < 8",
 ]
 
-if sys.version_info < (2, 7):
-    requirements.append("importlib == 1.0.1")
-    requirements.append("argparse")
-
 if not is_windows:
     requirements.append("bcrypt >= 3.1.0, < 3.2")