diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3c84509..a9c7026 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 We follow Semantic Version.
 
+## 1.1.0
+
+Improvements:
+
+- Packaged resources may now be included
+- Alternate file extensions are allowed
 
 ## 1.0.1
 
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index a0d9c33..5851629 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -41,7 +41,7 @@ We use `mypy` to run type checks on our code.
 To use it:
 
 ```bash
-mypy django_split_settings
+mypy split_settings
 ```
 
 This step is mandatory during the CI.
diff --git a/README.md b/README.md
index b365272..6938510 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,21 @@ previous files.
 
 We also made a in-depth [tutorial](https://sobolevn.me/2017/04/managing-djangos-settings).
 
+## Package Resources
+
+You may also include package resources and use alternate extensions:
+```python
+from mypackge import settings
+include(resource(settings, 'base.conf'))
+include(optional(resource(settings, 'local.conf')))
+```
+Resources may be also be included by passing the module as a string:
+
+```python
+include(resource('mypackage.settings', 'base.conf'))
+```
+Note that resources included from archived packages (i.e. zip files), will have a temporary
+file created, which will be deleted after the settings file has been compiled.
 
 ## Tips and tricks
 
diff --git a/poetry.lock b/poetry.lock
index f706447..4a0c48e 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -90,7 +90,7 @@ version = "7.1.1"
 [[package]]
 category = "dev"
 description = "Cross-platform colored terminal text."
-marker = "sys_platform == \"win32\" or platform_system == \"Windows\""
+marker = "platform_system == \"Windows\" or sys_platform == \"win32\""
 name = "colorama"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
@@ -436,7 +436,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 version = "1.2.0"
 
 [[package]]
-category = "dev"
+category = "main"
 description = "Read metadata from Python packages"
 marker = "python_version < \"3.8\""
 name = "importlib-metadata"
@@ -451,6 +451,26 @@ zipp = ">=0.5"
 docs = ["sphinx", "rst.linker"]
 testing = ["packaging", "importlib-resources"]
 
+[[package]]
+category = "main"
+description = "Read resources from Python packages"
+name = "importlib-resources"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+version = "2.0.0"
+
+[package.dependencies]
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = "*"
+
+[package.dependencies.zipp]
+python = "<3.8"
+version = ">=0.4"
+
+[package.extras]
+docs = ["sphinx", "rst.linker", "jaraco.packaging"]
+
 [[package]]
 category = "dev"
 description = "A Python utility / library to sort Python imports."
@@ -1138,7 +1158,7 @@ python = "<3.8"
 version = "*"
 
 [[package]]
-category = "dev"
+category = "main"
 description = "Backport of pathlib-compatible object wrapper for zip files"
 marker = "python_version < \"3.8\""
 name = "zipp"
@@ -1151,7 +1171,7 @@ docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
 testing = ["jaraco.itertools", "func-timeout"]
 
 [metadata]
-content-hash = "c6d306976f2e1114d6bc3d743d052f73b2ce76d4748d3462d2eb3b1867641d38"
+content-hash = "87f3d446bcd2e9998483700a1ba347bffab8d3e6b4a5ca0d7ac3d40162d907f8"
 python-versions = "^3.6"
 
 [metadata.files]
@@ -1339,6 +1359,10 @@ importlib-metadata = [
     {file = "importlib_metadata-1.6.0-py2.py3-none-any.whl", hash = "sha256:2a688cbaa90e0cc587f1df48bdc97a6eadccdcd9c35fb3f976a09e3b5016d90f"},
     {file = "importlib_metadata-1.6.0.tar.gz", hash = "sha256:34513a8a0c4962bc66d35b359558fd8a5e10cd472d37aec5f66858addef32c1e"},
 ]
+importlib-resources = [
+    {file = "importlib_resources-2.0.0-py2.py3-none-any.whl", hash = "sha256:a86462cf34a6d391d1d5d598a5e2f5aac9fc00b265d40542e1196328f015d1f6"},
+    {file = "importlib_resources-2.0.0.tar.gz", hash = "sha256:7f6aae2ed252ba10f5d1af5676b0e35f3b3eb7d3cc103b8365cc92aec0c79258"},
+]
 isort = [
     {file = "isort-4.3.21-py2.py3-none-any.whl", hash = "sha256:6e811fcb295968434526407adb8796944f1988c5b65e8139058f2014cbe100fd"},
     {file = "isort-4.3.21.tar.gz", hash = "sha256:54da7e92468955c4fceacd0c86bd0ec997b0e1ee80d97f67c35a78b719dccab1"},
diff --git a/pyproject.toml b/pyproject.toml
index dd97dc9..9d76ace 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -46,6 +46,7 @@ classifiers = [
 
 [tool.poetry.dependencies]
 python = "^3.6"
+importlib-resources = "^2.0.0"
 
 [tool.poetry.dev-dependencies]
 django = "^2.2"
diff --git a/setup.cfg b/setup.cfg
index e3b6089..049932e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -29,9 +29,9 @@ per-file-ignores =
   # Our module is complex, there's nothing we can do:
   split_settings/tools.py: WPS232
   # Tests contain examples with logic in init files:
-  tests/*/__init__.py: WPS412
+  tests/*/__init__.py: WPS412, WPS226
   # There are multiple fixtures, `assert`s, and subprocesses in tests:
-  tests/*.py: S101, S105, S404, S603, S607
+  tests/*.py: S101, S105, S404, S603, S607, WPS202
 
 
 [isort]
diff --git a/split_settings/tools.py b/split_settings/tools.py
index 307d347..7766ee4 100644
--- a/split_settings/tools.py
+++ b/split_settings/tools.py
@@ -7,17 +7,38 @@
 settings files.
 """
 
+import contextlib
 import glob
 import inspect
 import os
 import sys
-from importlib.util import module_from_spec, spec_from_file_location
+import types
+from importlib.machinery import SourceFileLoader
+from importlib.util import module_from_spec, spec_from_loader
+from typing import List, Union
+
+try:
+    from importlib.resources import (  # type: ignore # noqa: WPS433
+        files,
+        as_file,
+    )
+except ImportError:
+    # Use backport to PY<3.9 `importlib_resources`.
+    # importlib_resources is included in python stdlib starting at 3.7 but
+    # the files function is not available until python 3.9
+    from importlib_resources import files, as_file  # noqa: WPS433, WPS440
 
-__all__ = ('optional', 'include')  # noqa: WPS410
+__all__ = ('optional', 'include', 'resource')  # noqa: WPS410
 
 #: Special magic attribute that is sometimes set by `uwsgi` / `gunicord`.
 _INCLUDED_FILE = '__included_file__'
 
+# If resources are located in archives, importlib will create temporary
+# files to access them contained within contexts, we track the contexts
+# here as opposed to the _Resource.__del__ method because invocation of
+# that method is non-deterministic
+__resource_file_contexts__: List[contextlib.ExitStack] = []
+
 
 def optional(filename: str) -> str:
     """
@@ -44,6 +65,68 @@ class _Optional(str):  # noqa: WPS600
     """
 
 
+def resource(package: Union[str, types.ModuleType], filename: str) -> str:
+    """
+    Include a packaged resource as a settings file.
+
+    Args:
+        package: the package as either an imported module, or a string
+        filename: the filename of the resource to include.
+
+    Returns:
+        New instance of :class:`_Resource`.
+
+    """
+    return _Resource(package, filename)
+
+
+class _Resource(str):  # noqa: WPS600
+    """
+    Wrap an included package resource as a str.
+
+    Resource includes may also be wrapped as Optional and record if the
+    package was found or not.
+    """
+
+    module_not_found = False
+    package: str
+    filename: str
+
+    def __new__(
+        cls,
+        package: Union[str, types.ModuleType],
+        filename: str,
+    ) -> '_Resource':
+
+        # the type ignores workaround a known mypy issue
+        # https://github.com/python/mypy/issues/1021
+        try:
+            ref = files(package) / filename
+        except ModuleNotFoundError:
+            rsrc = super().__new__(cls, '')  # type: ignore
+            rsrc.module_not_found = True
+            return rsrc
+
+        file_manager = contextlib.ExitStack()
+        __resource_file_contexts__.append(file_manager)
+        return super().__new__(  # type: ignore
+            cls,
+            file_manager.enter_context(as_file(ref)),
+        )
+
+    def __init__(
+        self,
+        package: Union[str, types.ModuleType],
+        filename: str,
+    ) -> None:
+        super().__init__()
+        if isinstance(package, types.ModuleType):
+            self.package = package.__name__
+        else:
+            self.package = package
+        self.filename = filename
+
+
 def include(*args: str, **kwargs) -> None:  # noqa: WPS210, WPS231, C901
     """
     Used for including Django project settings from multiple files.
@@ -52,11 +135,13 @@ def include(*args: str, **kwargs) -> None:  # noqa: WPS210, WPS231, C901
 
     .. code:: python
 
-        from split_settings.tools import optional, include
+        from split_settings.tools import optional, include, resource
+        import components
 
         include(
             'components/base.py',
             'components/database.py',
+            resource(components, settings.conf),  # package resource
             optional('local_settings.py'),
 
             scope=globals(),  # optional scope
@@ -68,6 +153,7 @@ def include(*args: str, **kwargs) -> None:  # noqa: WPS210, WPS231, C901
 
     Raises:
         IOError: if a required settings file is not found.
+        ModuleNotFoundError: if a required resource package is not found.
 
     """
     # we are getting globals() from previous frame
@@ -85,7 +171,18 @@ def include(*args: str, **kwargs) -> None:  # noqa: WPS210, WPS231, C901
 
     for conf_file in args:
         saved_included_file = scope.get(_INCLUDED_FILE)
-        pattern = os.path.join(conf_path, conf_file)
+        pattern = conf_file
+        # if a resource was not found the path will resolve to empty str here
+        if pattern:
+            pattern = os.path.join(conf_path, conf_file)
+
+        # check if this include is a resource with an unfound module
+        # and issue a more specific exception
+        if isinstance(conf_file, _Resource):
+            if conf_file.module_not_found:
+                raise ModuleNotFoundError(
+                    'No module named {0}'.format(conf_file.package),
+                )
 
         # find files per pattern, raise an error if not found
         # (unless file is optional)
@@ -114,8 +211,12 @@ def include(*args: str, **kwargs) -> None:  # noqa: WPS210, WPS231, C901
                 rel_path[:rel_path.rfind('.')].replace('/', '.'),
             )
 
-            spec = spec_from_file_location(
-                module_name, included_file,
+            spec = spec_from_loader(
+                module_name,
+                SourceFileLoader(
+                    os.path.basename(included_file).split('.')[0],
+                    included_file,
+                ),
             )
             module = module_from_spec(spec)
             sys.modules[module_name] = module
@@ -123,3 +224,8 @@ def include(*args: str, **kwargs) -> None:  # noqa: WPS210, WPS231, C901
             scope[_INCLUDED_FILE] = saved_included_file
         elif _INCLUDED_FILE in scope:
             scope.pop(_INCLUDED_FILE)
+
+    # close the contexts of any temporary files created to access
+    # resource contents thereby deleting them
+    for ctx in __resource_file_contexts__:
+        ctx.close()
diff --git a/tests/conftest.py b/tests/conftest.py
index e14b3f7..74fae97 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -7,7 +7,7 @@
 import pytest
 
 
-class Scope(dict):  # noqa: WPS600
+class Scope(dict):  # noqa: WPS600, WPS202
     """This class emulates `globals()`, but does not share state in tests."""
 
     def __init__(self, *args, **kwargs):
@@ -43,6 +43,20 @@ def merged():
     return _merged
 
 
+@pytest.fixture()
+def alt_ext():
+    """This fixture returns alt_ext settings example."""
+    from tests.settings import alt_ext as _alt_ext  # noqa: WPS433
+    return _alt_ext
+
+
+@pytest.fixture()
+def resources():
+    """This fixture returns resource settings example."""
+    from tests.settings import resources as _resources  # noqa: WPS433
+    return _resources
+
+
 @pytest.fixture()
 def stacked():
     """This fixture returns stacked settings example."""
diff --git a/tests/settings/alt_ext/__init__.py b/tests/settings/alt_ext/__init__.py
new file mode 100644
index 0000000..3b43cfb
--- /dev/null
+++ b/tests/settings/alt_ext/__init__.py
@@ -0,0 +1,10 @@
+# -*- coding: utf-8 -*-
+
+from split_settings.tools import include, optional
+
+# Includes files with non-standard extensions:
+include(
+    'include',
+    '*.conf',
+    optional('optional.ext'),
+)
diff --git a/tests/settings/alt_ext/include b/tests/settings/alt_ext/include
new file mode 100644
index 0000000..a8feda4
--- /dev/null
+++ b/tests/settings/alt_ext/include
@@ -0,0 +1,3 @@
+# -*- coding: utf-8 -*-
+
+NO_EXT_INCLUDED = True
diff --git a/tests/settings/alt_ext/include.conf b/tests/settings/alt_ext/include.conf
new file mode 100644
index 0000000..adae986
--- /dev/null
+++ b/tests/settings/alt_ext/include.conf
@@ -0,0 +1,3 @@
+# -*- coding: utf-8 -*-
+
+DOT_CONF_INCLUDED = True
diff --git a/tests/settings/alt_ext/include.double.conf b/tests/settings/alt_ext/include.double.conf
new file mode 100644
index 0000000..8e31368
--- /dev/null
+++ b/tests/settings/alt_ext/include.double.conf
@@ -0,0 +1,3 @@
+# -*- coding: utf-8 -*-
+
+DOUBLE_EXT_INCLUDED = True
diff --git a/tests/settings/alt_ext/optional.ext b/tests/settings/alt_ext/optional.ext
new file mode 100644
index 0000000..6cecc38
--- /dev/null
+++ b/tests/settings/alt_ext/optional.ext
@@ -0,0 +1,3 @@
+# -*- coding: utf-8 -*-
+
+OPTIONAL_INCLUDED = True
diff --git a/tests/settings/resources/__init__.py b/tests/settings/resources/__init__.py
new file mode 100644
index 0000000..b5dcbe3
--- /dev/null
+++ b/tests/settings/resources/__init__.py
@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+
+from split_settings.tools import include, optional, resource
+from tests.settings import resources
+
+include(
+    # Components:
+    resource('tests.settings.resources', 'base.conf'),
+    resource('tests.settings.resources', 'locale.conf'),
+    resource('tests.settings.resources', 'apps_middleware'),
+    resource(resources, 'static.settings'),
+    resource(resources, 'templates.py'),
+    resource(resources, 'multiple/subdirs/file.conf'),
+    optional(resource(resources, 'database.conf')),
+    'logging.py',
+
+    # Missing file:
+    optional(resource(resources, 'missing_file.py')),
+    optional(resource('tests.settings.resources', 'missing_file.conf')),
+    resource('tests.settings.resources', 'error.conf'),
+
+    # Missing module
+    optional(resource('module.does.not.exist', 'settings.conf')),
+
+    # Scope:
+    scope=globals(),  # noqa: WPS421
+)
diff --git a/tests/settings/resources/apps_middleware b/tests/settings/resources/apps_middleware
new file mode 100644
index 0000000..ea0c33b
--- /dev/null
+++ b/tests/settings/resources/apps_middleware
@@ -0,0 +1,3 @@
+# -*- coding: utf-8 -*-
+
+APPS_MIDDLEWARE_INCLUDED = True
diff --git a/tests/settings/resources/base.conf b/tests/settings/resources/base.conf
new file mode 100644
index 0000000..4ce8b13
--- /dev/null
+++ b/tests/settings/resources/base.conf
@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+
+BASE_INCLUDED = True
+OVERRIDE_WORKS = False
diff --git a/tests/settings/resources/database.conf b/tests/settings/resources/database.conf
new file mode 100644
index 0000000..7683e1a
--- /dev/null
+++ b/tests/settings/resources/database.conf
@@ -0,0 +1,3 @@
+# -*- coding: utf-8 -*-
+
+DATABASE_INCLUDED = True
diff --git a/tests/settings/resources/error.conf b/tests/settings/resources/error.conf
new file mode 100644
index 0000000..ad5a7d1
--- /dev/null
+++ b/tests/settings/resources/error.conf
@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+
+from split_settings.tools import include, resource
+
+UNFOUND_RESOURCE_IS_IOERROR = False
+UNFOUND_RESOURCE_ERR_STR = ''
+UNFOUND_PACKAGE_IS_MODULE_ERROR = False
+UNFOUND_PACKAGE_ERR_STR = ''
+try:
+    include(resource('tests.settings.resources', 'does_not_exist.conf'))
+except IOError as ioe:
+    UNFOUND_RESOURCE_ERR_STR = str(ioe)
+    UNFOUND_RESOURCE_IS_IOERROR = True
+
+try:
+    include(resource('does.not.exist', 'database.conf'))
+except ModuleNotFoundError as mnfe:
+    UNFOUND_PACKAGE_ERR_STR = str(mnfe)
+    UNFOUND_PACKAGE_IS_MODULE_ERROR = True
+
+try:
+    include(resource('tests.settings.resources', 'multiple/subdirs/does_not_exist.conf'))
+except IOError:
+    UNFOUND_RESOURCE_IS_IOERROR &= True
+except:
+    UNFOUND_RESOURCE_IS_IOERROR = False
+
diff --git a/tests/settings/resources/locale.conf b/tests/settings/resources/locale.conf
new file mode 100644
index 0000000..3615b7b
--- /dev/null
+++ b/tests/settings/resources/locale.conf
@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+
+LOCALE_INCLUDED = True
+OVERRIDE_WORKS = True
diff --git a/tests/settings/resources/logging.py b/tests/settings/resources/logging.py
new file mode 100644
index 0000000..cbaf432
--- /dev/null
+++ b/tests/settings/resources/logging.py
@@ -0,0 +1,3 @@
+# -*- coding: utf-8 -*-
+
+LOGGING_INCLUDED = True
diff --git a/tests/settings/resources/multiple/subdirs/file.conf b/tests/settings/resources/multiple/subdirs/file.conf
new file mode 100644
index 0000000..76f00f1
--- /dev/null
+++ b/tests/settings/resources/multiple/subdirs/file.conf
@@ -0,0 +1,3 @@
+# -*- coding: utf-8 -*-
+
+MULTIPLE_SUBDIR_FILE_INCLUDED = True
diff --git a/tests/settings/resources/static.settings b/tests/settings/resources/static.settings
new file mode 100644
index 0000000..8728818
--- /dev/null
+++ b/tests/settings/resources/static.settings
@@ -0,0 +1,3 @@
+# -*- coding: utf-8 -*-
+
+STATIC_SETTINGS_INCLUDED = True
diff --git a/tests/settings/resources/templates.py b/tests/settings/resources/templates.py
new file mode 100644
index 0000000..5d02f8d
--- /dev/null
+++ b/tests/settings/resources/templates.py
@@ -0,0 +1,3 @@
+# -*- coding: utf-8 -*-
+
+TEMPLATES_INCLUDED = True
diff --git a/tests/test_import.py b/tests/test_import.py
index feded79..9229459 100644
--- a/tests/test_import.py
+++ b/tests/test_import.py
@@ -7,6 +7,7 @@ def test_wildcard_import():
     """Imports all from all modules."""
     assert 'optional' in __all__
     assert 'include' in __all__
+    assert 'resource' in __all__
 
 
 def test_class_import(merged):
diff --git a/tests/test_split_settings.py b/tests/test_split_settings.py
index 42ce703..fdbec15 100644
--- a/tests/test_split_settings.py
+++ b/tests/test_split_settings.py
@@ -7,6 +7,36 @@ def test_merge(merged):
     assert merged.STATIC_ROOT
 
 
+def test_alt_ext(alt_ext):
+    """Test that all values from settings are present."""
+    assert alt_ext.NO_EXT_INCLUDED
+    assert alt_ext.DOT_CONF_INCLUDED
+    assert alt_ext.DOUBLE_EXT_INCLUDED
+    assert alt_ext.OPTIONAL_INCLUDED
+
+
+def test_resources(resources):  # noqa: WPS218
+    """Test that all values from settings are present."""
+    assert resources.APPS_MIDDLEWARE_INCLUDED
+    assert resources.BASE_INCLUDED
+    assert resources.DATABASE_INCLUDED
+    assert resources.LOCALE_INCLUDED
+    assert resources.LOGGING_INCLUDED
+    assert resources.STATIC_SETTINGS_INCLUDED
+    assert resources.TEMPLATES_INCLUDED
+    assert resources.OVERRIDE_WORKS
+    assert resources.MULTIPLE_SUBDIR_FILE_INCLUDED
+    assert resources.UNFOUND_RESOURCE_IS_IOERROR
+    assert resources.UNFOUND_PACKAGE_IS_MODULE_ERROR
+    assert resources.UNFOUND_RESOURCE_ERR_STR.startswith(
+        'No such file',
+    )
+    assert resources.UNFOUND_RESOURCE_ERR_STR.endswith(
+        'does_not_exist.conf',
+    )
+    assert resources.UNFOUND_PACKAGE_ERR_STR == 'No module named does.not.exist'
+
+
 def test_override(merged, monkeypatch):
     """This setting must be overridden in the testing.py."""
     monkeypatch.setenv('DJANGO_SETTINGS_MODULE', 'tests.settings.merged')