diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index bb627986e0f..a94a53778ce 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -10,3 +10,16 @@ repos:
     rev: v2.2.3
     hooks:
       - id: flake8
+  # run these occasionally, ref discussion https://github.com/pydata/xarray/pull/3194
+  # - repo: https://github.com/asottile/pyupgrade
+  #   rev: v1.22.1
+  #   hooks:
+  #     - id: pyupgrade
+  #       args:
+  #         - "--py3-only"
+  #         # remove on f-strings in Py3.7
+  #         - "--keep-percent-format"
+  # - repo: https://github.com/timothycrosley/isort
+  #   rev: 4.3.21-2
+  #   hooks:
+  #     - id: isort
diff --git a/asv_bench/benchmarks/__init__.py b/asv_bench/benchmarks/__init__.py
index 2ee5350ba90..ef647c5a74a 100644
--- a/asv_bench/benchmarks/__init__.py
+++ b/asv_bench/benchmarks/__init__.py
@@ -1,5 +1,3 @@
-from __future__ import absolute_import, division, print_function
-
 import itertools
 
 import numpy as np
diff --git a/asv_bench/benchmarks/dataarray_missing.py b/asv_bench/benchmarks/dataarray_missing.py
index b119d14e73a..9711e2bbcd0 100644
--- a/asv_bench/benchmarks/dataarray_missing.py
+++ b/asv_bench/benchmarks/dataarray_missing.py
@@ -1,5 +1,3 @@
-from __future__ import absolute_import, division, print_function
-
 import pandas as pd
 
 import xarray as xr
diff --git a/asv_bench/benchmarks/dataset_io.py b/asv_bench/benchmarks/dataset_io.py
index 1542d2c857a..c1567d0b513 100644
--- a/asv_bench/benchmarks/dataset_io.py
+++ b/asv_bench/benchmarks/dataset_io.py
@@ -1,5 +1,3 @@
-from __future__ import absolute_import, division, print_function
-
 import os
 
 import numpy as np
diff --git a/asv_bench/benchmarks/indexing.py b/asv_bench/benchmarks/indexing.py
index c9e367dc696..cd212895d99 100644
--- a/asv_bench/benchmarks/indexing.py
+++ b/asv_bench/benchmarks/indexing.py
@@ -1,5 +1,3 @@
-from __future__ import absolute_import, division, print_function
-
 import numpy as np
 import pandas as pd
 
diff --git a/asv_bench/benchmarks/interp.py b/asv_bench/benchmarks/interp.py
index b62717d7ceb..cded900ebbc 100644
--- a/asv_bench/benchmarks/interp.py
+++ b/asv_bench/benchmarks/interp.py
@@ -1,5 +1,3 @@
-from __future__ import absolute_import, division, print_function
-
 import numpy as np
 import pandas as pd
 
diff --git a/asv_bench/benchmarks/reindexing.py b/asv_bench/benchmarks/reindexing.py
index ceed186fcc8..fe4fa500c09 100644
--- a/asv_bench/benchmarks/reindexing.py
+++ b/asv_bench/benchmarks/reindexing.py
@@ -1,5 +1,3 @@
-from __future__ import absolute_import, division, print_function
-
 import numpy as np
 
 import xarray as xr
diff --git a/asv_bench/benchmarks/rolling.py b/asv_bench/benchmarks/rolling.py
index 268bad7e738..d5426af4aa1 100644
--- a/asv_bench/benchmarks/rolling.py
+++ b/asv_bench/benchmarks/rolling.py
@@ -1,5 +1,3 @@
-from __future__ import absolute_import, division, print_function
-
 import numpy as np
 import pandas as pd
 
diff --git a/asv_bench/benchmarks/unstacking.py b/asv_bench/benchmarks/unstacking.py
index 7b529373902..342475b96df 100644
--- a/asv_bench/benchmarks/unstacking.py
+++ b/asv_bench/benchmarks/unstacking.py
@@ -1,5 +1,3 @@
-from __future__ import absolute_import, division, print_function
-
 import numpy as np
 
 import xarray as xr
diff --git a/doc/conf.py b/doc/conf.py
index e181c3e14c2..a80e470af26 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -11,7 +11,7 @@
 #
 # All configuration values have a default; values that are commented out
 # serve to show the default.
-from __future__ import absolute_import, division, print_function
+
 
 import datetime
 import os
@@ -262,11 +262,11 @@
 
 latex_elements = {
     # The paper size ('letterpaper' or 'a4paper').
-    #'papersize': 'letterpaper',
+    # 'papersize': 'letterpaper',
     # The font size ('10pt', '11pt' or '12pt').
-    #'pointsize': '10pt',
+    # 'pointsize': '10pt',
     # Additional stuff for the LaTeX preamble.
-    #'preamble': '',
+    # 'preamble': '',
 }
 
 # Grouping the document tree into LaTeX files. List of tuples
diff --git a/doc/gallery/plot_cartopy_facetgrid.py b/doc/gallery/plot_cartopy_facetgrid.py
index cfa9d3b07ec..a0afa7ad92e 100644
--- a/doc/gallery/plot_cartopy_facetgrid.py
+++ b/doc/gallery/plot_cartopy_facetgrid.py
@@ -14,7 +14,6 @@
 .. _this discussion: https://github.com/pydata/xarray/issues/1397#issuecomment-299190567
 """  # noqa
 
-from __future__ import division
 
 import cartopy.crs as ccrs
 import matplotlib.pyplot as plt
diff --git a/setup.cfg b/setup.cfg
index 68fc3b6e06c..4bcf979197d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -30,6 +30,8 @@ exclude=
     doc
 
 [isort]
+default_section=THIRDPARTY
+known_first_party=xarray
 multi_line_output=3
 include_trailing_comma=True
 force_grid_wrap=0
diff --git a/versioneer.py b/versioneer.py
index ea714e561b7..7b55d5d06cb 100644
--- a/versioneer.py
+++ b/versioneer.py
@@ -277,7 +277,6 @@
 
 """
 
-from __future__ import print_function
 
 import errno
 import json