diff --git a/appveyor.yml b/appveyor.yml
index 0a57f36..e789e1e 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,8 +1,4 @@
 environment:
-  TWINE_USERNAME: penguinolog
-  TWINE_PASSWORD:
-    secure: TCKGf77kkVeo2Pbd+lQY5Q==
-
   matrix:
     - PYTHON: "C:\\Python35"
       PYTHON_VERSION: "3.5.x" # currently 3.5.1
@@ -20,6 +16,14 @@ environment:
       PYTHON_VERSION: "3.6.x" # currently 3.6.0
       PYTHON_ARCH: "64"
 
+    - PYTHON: "C:\\Python37"
+      PYTHON_VERSION: "3.7.x" # currently 3.6.0
+      PYTHON_ARCH: "32"
+
+    - PYTHON: "C:\\Python37-x64"
+      PYTHON_VERSION: "3.7.x" # currently 3.6.0
+      PYTHON_ARCH: "64"
+
 install:
   - cmd: echo "Using cmd"
 
@@ -56,6 +60,3 @@ test_script:
 artifacts:
   - path: dist\*
     name: Python built code
-
-on_success:
-  - if "%APPVEYOR_REPO_TAG%"=="true" ( pip install -U twine && twine upload dist/*.whl )
diff --git a/logwrap/__init__.pxd b/logwrap/__init__.pxd
index aa09ac5..a607901 100644
--- a/logwrap/__init__.pxd
+++ b/logwrap/__init__.pxd
@@ -1 +1,9 @@
 cpdef tuple __all__
+
+cpdef str __version__
+cpdef str __author__
+cpdef str __author_email__
+cpdef dict __maintainers__
+cpdef str __url__
+cpdef str __description__
+cpdef str __license__
diff --git a/logwrap/__init__.pyx b/logwrap/__init__.pyx
index 765d677..fa0303d 100644
--- a/logwrap/__init__.pyx
+++ b/logwrap/__init__.pyx
@@ -1,3 +1,19 @@
+#    Copyright 2016-2018 Alexey Stepanov aka penguinolog
+##
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import pkg_resources
+
 from .repr_utils cimport PrettyFormat, PrettyRepr, PrettyStr, pretty_repr, pretty_str
 
 from .log_wrap cimport LogWrap
@@ -14,3 +30,27 @@ cpdef tuple __all__ = (
     "BoundParameter",
     "bind_args_kwargs",
 )
+
+cpdef str __version__
+
+try:
+    __version__ = pkg_resources.get_distribution(__name__).version
+except pkg_resources.DistributionNotFound:
+    # package is not installed, try to get from SCM
+    try:
+        import setuptools_scm  # type: ignore
+
+        __version__ = setuptools_scm.get_version()
+    except ImportError:
+        pass
+
+cpdef str __author__ = "Alexey Stepanov"
+cpdef str __author_email__ = "penguinolog@gmail.com"
+cpdef dict __maintainers__ = {
+    "Alexey Stepanov": "penguinolog@gmail.com",
+    "Antonio Esposito": "esposito.cloud@gmail.com",
+    "Dennis Dmitriev": "dis-xcom@gmail.com",
+}
+cpdef str __url__ = "https://github.com/python-useful-helpers/logwrap"
+cpdef str __description__ = "Decorator for logging function arguments and return value by human-readable way"
+cpdef str __license__ = "Apache License, Version 2.0"
diff --git a/setup.py b/setup.py
index 030e976..8a47be8 100644
--- a/setup.py
+++ b/setup.py
@@ -22,9 +22,9 @@
 import collections
 from distutils.command import build_ext
 import distutils.errors
+import glob
 import os.path
 import shutil
-import sys
 
 try:
     # noinspection PyPackageRequirements
@@ -44,19 +44,7 @@
     long_description = f.read()
 
 
-def _extension(modpath):
-    """Make setuptools.Extension."""
-    return setuptools.Extension(modpath, [modpath.replace(".", "/") + ".py"])
-
-
-requires_optimization = [
-    setuptools.Extension("logwrap.class_decorator", ["logwrap/class_decorator.pyx"]),
-    setuptools.Extension("logwrap.log_wrap", ["logwrap/log_wrap.pyx"]),
-    setuptools.Extension("logwrap.repr_utils", ["logwrap/repr_utils.pyx"]),
-]
-
-if "win32" != sys.platform:
-    requires_optimization.append(_extension("logwrap.__init__"))
+requires_optimization = [setuptools.Extension("logwrap", glob.glob("logwrap/*.pyx"))]
 
 # noinspection PyCallingNonCallable
 ext_modules = (
@@ -90,9 +78,7 @@ def run(self):
             root_dir = os.path.abspath(os.path.join(__file__, ".."))
             target_dir = build_dir if not self.inplace else root_dir
 
-            src_files = (
-                os.path.join("logwrap", "__init__.py"),
-            )
+            src_files = (os.path.join("logwrap", "__init__.py"),)
 
             for src_file in src_files:
                 src = os.path.join(root_dir, src_file)
@@ -233,7 +219,7 @@ def get_simple_vars_from_src(src):
         "setuptools >= 21.0.0,!=24.0.0,"
         "!=34.0.0,!=34.0.1,!=34.0.2,!=34.0.3,!=34.1.0,!=34.1.1,!=34.2.0,!=34.3.0,!=34.3.1,!=34.3.2,"
         "!=36.2.0",
-        "setuptools_scm"
+        "setuptools_scm",
     ],
     use_scm_version=True,
     install_requires=required,