diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 509349ef..cc13e4a9 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,4 +1,10 @@
 repos:
+    -   
+        repo: https://github.com/pre-commit/mirrors-isort
+        rev: v4.3.21
+        hooks:
+            - id: isort
+              language_version: python3.7
     -
         repo: 'https://github.com/psf/black'
         rev: stable
diff --git a/README.md b/README.md
index 0af22036..21e25ad1 100644
--- a/README.md
+++ b/README.md
@@ -241,7 +241,7 @@ $ pip install -e .[dev]
 
 **Python >=3.7 only**
 
-This repo is set to use `pre-commit` to run *flake8*, *pydocstring*, *black* ("uncompromising Python code formatter") and mypy when committing new code.
+This repo is set to use `pre-commit` to run *isort*, *flake8*, *pydocstring*, *black* ("uncompromising Python code formatter") and mypy when committing new code.
 
 ```
 $ pre-commit install
@@ -249,6 +249,7 @@ $ pre-commit install
 $ git add .
 
 $ git commit -m'my change'
+isort....................................................................Passed
 black....................................................................Passed
 Flake8...................................................................Passed
 Verifying PEP257 Compliance..............................................Passed
diff --git a/cogeo_mosaic/backends/base.py b/cogeo_mosaic/backends/base.py
index d907cdd3..a0a47195 100644
--- a/cogeo_mosaic/backends/base.py
+++ b/cogeo_mosaic/backends/base.py
@@ -1,13 +1,13 @@
 """cogeo_mosaic.backend.base: base Backend class."""
 
-from typing import Dict, List, Sequence
-
 import abc
 from contextlib import AbstractContextManager
+from typing import Dict, List, Sequence
 
 import mercantile
-from cogeo_mosaic.mosaic import MosaicJSON
+
 from cogeo_mosaic.backends.utils import get_hash
+from cogeo_mosaic.mosaic import MosaicJSON
 from cogeo_mosaic.utils import bbox_union
 
 
diff --git a/cogeo_mosaic/backends/dynamodb.py b/cogeo_mosaic/backends/dynamodb.py
index 8f771bee..f714ca5b 100644
--- a/cogeo_mosaic/backends/dynamodb.py
+++ b/cogeo_mosaic/backends/dynamodb.py
@@ -1,7 +1,5 @@
 """cogeo-mosaic AWS DynamoDB backend."""
 
-from typing import Any, Dict, List, Optional, Union, Sequence
-
 import functools
 import itertools
 import json
@@ -9,6 +7,7 @@
 import sys
 import warnings
 from decimal import Decimal
+from typing import Any, Dict, List, Optional, Sequence, Union
 
 import boto3
 import click
diff --git a/cogeo_mosaic/backends/file.py b/cogeo_mosaic/backends/file.py
index 85fc9eba..84725e02 100644
--- a/cogeo_mosaic/backends/file.py
+++ b/cogeo_mosaic/backends/file.py
@@ -1,19 +1,18 @@
 """cogeo-mosaic File backend."""
 
-from typing import Any, Dict, List, Optional, Union
-
-import json
 import functools
+import json
+from typing import Any, Dict, List, Optional, Union
 
 import mercantile
 
-from cogeo_mosaic.mosaic import MosaicJSON
 from cogeo_mosaic.backends.base import BaseBackend
 from cogeo_mosaic.backends.utils import (
     _compress_gz_json,
     _decompress_gz,
     get_assets_from_json,
 )
+from cogeo_mosaic.mosaic import MosaicJSON
 
 
 class FileBackend(BaseBackend):
diff --git a/cogeo_mosaic/backends/http.py b/cogeo_mosaic/backends/http.py
index c0ee52cc..b9b8ad87 100644
--- a/cogeo_mosaic/backends/http.py
+++ b/cogeo_mosaic/backends/http.py
@@ -1,16 +1,15 @@
 """cogeo-mosaic HTTP backend."""
 
-from typing import Any, Dict, List, Optional, Union
-
-import json
 import functools
+import json
+from typing import Any, Dict, List, Optional, Union
 
-import requests
 import mercantile
+import requests
 
-from cogeo_mosaic.mosaic import MosaicJSON
 from cogeo_mosaic.backends.base import BaseBackend
 from cogeo_mosaic.backends.utils import _decompress_gz, get_assets_from_json
+from cogeo_mosaic.mosaic import MosaicJSON
 
 
 class HttpBackend(BaseBackend):
diff --git a/cogeo_mosaic/backends/s3.py b/cogeo_mosaic/backends/s3.py
index 66e15b41..fdb3b8a0 100644
--- a/cogeo_mosaic/backends/s3.py
+++ b/cogeo_mosaic/backends/s3.py
@@ -1,21 +1,19 @@
 """cogeo-mosaic AWS S3 backend."""
 
-from typing import Any, Dict, List, Optional, Union
-
-import json
 import functools
+import json
+from typing import Any, Dict, List, Optional, Union
 
 import mercantile
-
 from boto3.session import Session as boto3_session
 
-from cogeo_mosaic.mosaic import MosaicJSON
 from cogeo_mosaic.backends.base import BaseBackend
 from cogeo_mosaic.backends.utils import (
     _compress_gz_json,
     _decompress_gz,
     get_assets_from_json,
 )
+from cogeo_mosaic.mosaic import MosaicJSON
 
 
 class S3Backend(BaseBackend):
diff --git a/cogeo_mosaic/backends/utils.py b/cogeo_mosaic/backends/utils.py
index c137aaad..c0a40b6a 100644
--- a/cogeo_mosaic/backends/utils.py
+++ b/cogeo_mosaic/backends/utils.py
@@ -1,12 +1,11 @@
 """cogeo-mosaic.backends utility functions."""
 
-from typing import Any, Dict, List
-
 import hashlib
 import itertools
 import json
 import os
 import zlib
+from typing import Any, Dict, List
 
 import mercantile
 
diff --git a/cogeo_mosaic/mosaic.py b/cogeo_mosaic/mosaic.py
index 9f681387..2ce068b9 100644
--- a/cogeo_mosaic/mosaic.py
+++ b/cogeo_mosaic/mosaic.py
@@ -1,17 +1,15 @@
 """cogeo_mosaic.mosaic MosaicJSON models and helper functions."""
 
-from typing import Any, Callable, Dict, List, Optional, Tuple, Sequence
-
 import warnings
+from typing import Any, Callable, Dict, List, Optional, Sequence, Tuple
 
 import click
 import mercantile
+from pydantic import BaseModel, Field
 from pygeos import STRtree, polygons, total_bounds
 from supermercado import burntiles
 
-from cogeo_mosaic.utils import get_footprints, _intersect_percent
-
-from pydantic import BaseModel, Field
+from cogeo_mosaic.utils import _intersect_percent, get_footprints
 
 
 def default_accessor(feature: Dict):
diff --git a/cogeo_mosaic/overviews.py b/cogeo_mosaic/overviews.py
index f7b9b1f5..e1c9cf1c 100644
--- a/cogeo_mosaic/overviews.py
+++ b/cogeo_mosaic/overviews.py
@@ -1,26 +1,21 @@
 """cogeo_mosaic.overviews: create low resolution image from a mosaic."""
 
-from typing import Dict, Tuple
-
 import random
 from concurrent import futures
+from typing import Dict, Tuple
 
 import click
-
 import mercantile
-from affine import Affine
-from supermercado.burntiles import tile_extrema
-
 import rasterio
+from affine import Affine
 from rasterio.io import MemoryFile
 from rasterio.windows import Window
-
-from rio_tiler.io import cogeo
-from rio_tiler_mosaic.mosaic import mosaic_tiler
-from rio_tiler_mosaic.methods import defaults
-
 from rio_cogeo.cogeo import cog_translate
 from rio_cogeo.utils import _meters_per_pixel, has_mask_band
+from rio_tiler.io import cogeo
+from rio_tiler_mosaic.methods import defaults
+from rio_tiler_mosaic.mosaic import mosaic_tiler
+from supermercado.burntiles import tile_extrema
 
 from cogeo_mosaic.backends import MosaicBackend
 from cogeo_mosaic.utils import _filter_futures
diff --git a/cogeo_mosaic/scripts/cli.py b/cogeo_mosaic/scripts/cli.py
index d3da4aba..e0a2315c 100644
--- a/cogeo_mosaic/scripts/cli.py
+++ b/cogeo_mosaic/scripts/cli.py
@@ -1,22 +1,21 @@
 """Cogeo-mosaic: cli."""
 
-import os
 import json
 import multiprocessing
-from pkg_resources import iter_entry_points
+import os
 
-from click_plugins import with_plugins
 import click
 import cligj
+from click_plugins import with_plugins
+from pkg_resources import iter_entry_points
+from rasterio.rio import options
+from rio_cogeo.profiles import cog_profiles
 
 from cogeo_mosaic import version as cogeo_mosaic_version
-from cogeo_mosaic.utils import get_footprints
-from cogeo_mosaic.mosaic import MosaicJSON
 from cogeo_mosaic.backends import MosaicBackend
+from cogeo_mosaic.mosaic import MosaicJSON
 from cogeo_mosaic.overviews import create_low_level_cogs
-
-from rasterio.rio import options
-from rio_cogeo.profiles import cog_profiles
+from cogeo_mosaic.utils import get_footprints
 
 
 @with_plugins(iter_entry_points("cogeo_mosaic.plugins"))
diff --git a/cogeo_mosaic/utils.py b/cogeo_mosaic/utils.py
index 6e1761a0..1eb918c4 100644
--- a/cogeo_mosaic/utils.py
+++ b/cogeo_mosaic/utils.py
@@ -1,22 +1,18 @@
 """cogeo_mosaic.utils: utility functions."""
 
-from typing import Dict, List, Sequence
-
+import logging
 import os
 import sys
-import logging
 from concurrent import futures
+from typing import Dict, List, Sequence
 
 import click
-
-import numpy
-from pygeos import intersection, area
 import mercantile
-
+import numpy
 import rasterio
-from rio_tiler.mercator import get_zooms
+from pygeos import area, intersection
 from rasterio.warp import transform_bounds
-
+from rio_tiler.mercator import get_zooms
 
 logger = logging.getLogger()
 logger.setLevel(logging.INFO)
diff --git a/setup.py b/setup.py
index ac654ea6..7c61dea0 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,6 @@
 """Setup cogeo-mosaic."""
 
-from setuptools import setup, find_packages
-
+from setuptools import find_packages, setup
 
 # Runtime requirements.
 inst_reqs = [
diff --git a/tests/test_backends.py b/tests/test_backends.py
index 479324ff..d2bf0cf3 100644
--- a/tests/test_backends.py
+++ b/tests/test_backends.py
@@ -1,26 +1,23 @@
 """Test backends."""
 
-from typing import Dict, List
-
-import os
 import json
+import os
 import time
-from io import BytesIO
 from decimal import Decimal
-
-import pytest
+from io import BytesIO
+from typing import Dict, List
 from unittest.mock import patch
 
+import pytest
 from click.testing import CliRunner
 
-from cogeo_mosaic.mosaic import MosaicJSON
 from cogeo_mosaic.backends import MosaicBackend
 from cogeo_mosaic.backends.dynamodb import DynamoDBBackend
 from cogeo_mosaic.backends.file import FileBackend
 from cogeo_mosaic.backends.http import HttpBackend
 from cogeo_mosaic.backends.s3 import S3Backend
 from cogeo_mosaic.backends.utils import _decompress_gz
-
+from cogeo_mosaic.mosaic import MosaicJSON
 
 mosaic_gz = os.path.join(os.path.dirname(__file__), "fixtures", "mosaic.json.gz")
 mosaic_bin = os.path.join(os.path.dirname(__file__), "fixtures", "mosaic.bin")
diff --git a/tests/test_backends_utils.py b/tests/test_backends_utils.py
index 77f23b7a..6df80957 100644
--- a/tests/test_backends_utils.py
+++ b/tests/test_backends_utils.py
@@ -1,12 +1,12 @@
 """Test backends utils."""
 
+import json
 import os
 import re
-import json
 
 import mercantile
-from cogeo_mosaic.backends import utils
 
+from cogeo_mosaic.backends import utils
 
 mosaic_gz = os.path.join(os.path.dirname(__file__), "fixtures", "mosaic.json.gz")
 mosaic_json = os.path.join(os.path.dirname(__file__), "fixtures", "mosaic.json")
diff --git a/tests/test_create.py b/tests/test_create.py
index f01208db..ce3b9636 100644
--- a/tests/test_create.py
+++ b/tests/test_create.py
@@ -5,7 +5,6 @@
 
 from cogeo_mosaic.mosaic import MosaicJSON, default_filter
 
-
 basepath = os.path.join(os.path.dirname(__file__), "fixtures")
 mosaic_gz = os.path.join(basepath, "mosaic.json.gz")
 mosaic_json = os.path.join(basepath, "mosaic.json")
diff --git a/tests/test_overview.py b/tests/test_overview.py
index 5e5cda30..c329b9f9 100644
--- a/tests/test_overview.py
+++ b/tests/test_overview.py
@@ -1,10 +1,10 @@
 """tests cogeo_mosaic.overview."""
 
-import os
 import json
-from click.testing import CliRunner
+import os
 
 import rasterio
+from click.testing import CliRunner
 from rio_cogeo.profiles import cog_profiles
 
 from cogeo_mosaic.mosaic import MosaicJSON
diff --git a/tox.ini b/tox.ini
index a7b1b8ac..7e7b71a1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -42,3 +42,11 @@ ignore = D203
 exclude = .git,__pycache__,docs/source/conf.py,old,build,dist
 max-complexity = 15
 max-line-length = 90
+
+[tool:isort]
+include_trailing_comma = True
+multi_line_output = 3
+line_length = 90
+known_first_party = cogeo_mosaic
+known_third_party = rasterio,rio_tiler,rio_cogeo,mercantile,supermercado,pygeos
+default_section = THIRDPARTY