diff --git a/os/metadata.txt b/os/metadata.txt
index bef75b55..26f9b09f 100644
--- a/os/metadata.txt
+++ b/os/metadata.txt
@@ -1,4 +1,4 @@
 srctype = micropython-lib
 type = package
-version = 0.1
+version = 0.1.1
 author = Paul Sokolovsky
diff --git a/os/os/__init__.py b/os/os/__init__.py
index f5440b3c..23311df9 100644
--- a/os/os/__init__.py
+++ b/os/os/__init__.py
@@ -35,9 +35,12 @@ F_OK = const(0)
 
 
 error = OSError
+name = "posix"
 sep = "/"
 curdir = "."
 pardir = ".."
+environ = {"WARNING": "NOT_IMPLEMENTED"}
+
 
 def check_error(ret):
     if ret == -1:
diff --git a/os/setup.py b/os/setup.py
index 18bd4104..9e2782ce 100644
--- a/os/setup.py
+++ b/os/setup.py
@@ -6,7 +6,7 @@ from setuptools import setup
 
 
 setup(name='micropython-os',
-      version='0.1',
+      version='0.1.1',
       description='os module for MicroPython',
       long_description="This is a module reimplemented specifically for MicroPython standard library,\nwith efficient and lean design in mind. Note that this module is likely work\nin progress and likely supports just a subset of CPython's corresponding\nmodule. Please help with the development if you are interested in this\nmodule.",
       url='https://github.com/micropython/micropython/issues/405',