diff --git a/.flake8 b/.flake8
index dee0cdb1..855c8d8a 100644
--- a/.flake8
+++ b/.flake8
@@ -12,6 +12,8 @@ import-order-style = google
 application-import-names = esmf_regrid
 select = C,D,E,F,I,W,B,B950
 ignore =
+    # D202: No blank lines allowed after function docstring
+    D202,
     # E203: whitespace before ':'
     E203,
     # E226: missing whitespace around arithmetic operator
@@ -28,7 +30,7 @@ ignore =
     W503,
     # W504: line break after binary operator
     W504
-exclude = 
+exclude =
     .eggs
     build
     esmf_regrid/__init__.py
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 2a304c3e..d68498bf 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -17,7 +17,7 @@ repos:
         # Don't commit to master branch.
     -   id: no-commit-to-branch
 -   repo: https://github.com/psf/black
-    rev: '22.12.0'
+    rev: '23.1.0'
     hooks:
     -   id: black
         # Force black to run on whole repo, using settings from pyproject.toml
@@ -30,6 +30,6 @@ repos:
     -   id: flake8
         args: [--config=./.flake8]
         additional_dependencies: [
-            'flake8-docstrings==1.6.0',
+            'flake8-docstrings==1.7.0',
             'flake8-import-order==0.18.2',
         ]
diff --git a/esmf_regrid/tests/unit/esmf_regridder/test_Regridder.py b/esmf_regrid/tests/unit/esmf_regridder/test_Regridder.py
index ef9c26ed..8f16753b 100644
--- a/esmf_regrid/tests/unit/esmf_regridder/test_Regridder.py
+++ b/esmf_regrid/tests/unit/esmf_regridder/test_Regridder.py
@@ -161,6 +161,7 @@ def test_Regridder_init_small():
     With predictable weights it is easier to check that the weights are
     associated with the correct indices.
     """
+
     # The following ASCII visualisation describes the source and target grids
     # and the indices which ESMF assigns to their cells.
     # Analysis of the weights dict returned by ESMF confirms that this is