diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 8c9b61a7364..1d4d6b302dd 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -8,12 +8,12 @@ repos:
       - id: check-yaml
   # isort should run before black as black sometimes tweaks the isort output
   - repo: https://github.com/PyCQA/isort
-    rev: 5.9.3
+    rev: 5.10.0
     hooks:
       - id: isort
   # https://github.com/python/black#version-control-integration
   - repo: https://github.com/psf/black
-    rev: 21.9b0
+    rev: 21.10b0
     hooks:
       - id: black
       - id: black-jupyter
@@ -22,8 +22,8 @@ repos:
     hooks:
       - id: blackdoc
         exclude: "generate_reductions.py"
-  - repo: https://gitlab.com/pycqa/flake8
-    rev: 3.9.2
+  - repo: https://github.com/PyCQA/flake8
+    rev: 4.0.1
     hooks:
       - id: flake8
   # - repo: https://github.com/Carreau/velin
diff --git a/xarray/tests/test_distributed.py b/xarray/tests/test_distributed.py
index 92f39069aa3..69318886409 100644
--- a/xarray/tests/test_distributed.py
+++ b/xarray/tests/test_distributed.py
@@ -2,14 +2,9 @@
 import pickle
 
 import pytest
-
-dask = pytest.importorskip("dask")  # isort:skip
-distributed = pytest.importorskip("distributed")  # isort:skip
-
 from dask.distributed import Client, Lock
-from distributed.utils_test import cluster, gen_cluster
-from distributed.utils_test import loop
 from distributed.client import futures_of
+from distributed.utils_test import cluster, gen_cluster, loop
 
 import xarray as xr
 from xarray.backends.locks import HDF5_LOCK, CombinedLock
@@ -25,12 +20,16 @@
     assert_allclose,
     has_h5netcdf,
     has_netCDF4,
-    requires_rasterio,
     has_scipy,
-    requires_zarr,
     requires_cfgrib,
+    requires_rasterio,
+    requires_zarr,
 )
 
+dask = pytest.importorskip("dask")  # isort:skip
+distributed = pytest.importorskip("distributed")  # isort:skip
+
+
 # this is to stop isort throwing errors. May have been easier to just use
 # `isort:skip` in retrospect