diff --git a/.github/workflows/basemap-data-hires.yml b/.github/workflows/basemap-data-hires.yml
index 5cec79af0..2e8ef7f8a 100644
--- a/.github/workflows/basemap-data-hires.yml
+++ b/.github/workflows/basemap-data-hires.yml
@@ -4,6 +4,7 @@ env:
   PKGDIR: "packages/basemap_data_hires"
   PYTHONWARNINGS: "ignore:DEPRECATION"
   PIP_DISABLE_PIP_VERSION_CHECK: 1
+  PIP_PREFER_BINARY: 1
   PIP_TIMEOUT: 10
   PIP_RETRIES: 0
 
@@ -114,9 +115,9 @@ jobs:
           name: artifacts-build
           path: ${{ env.PKGDIR }}/dist
       -
-        name: Install requirements
+        name: Install upload requirements
         run: |
-          pip install --prefer-binary twine
+          pip install twine
       -
         name: Upload distributables
         env:
diff --git a/.github/workflows/basemap-data.yml b/.github/workflows/basemap-data.yml
index e77ccc22a..ade389cd7 100644
--- a/.github/workflows/basemap-data.yml
+++ b/.github/workflows/basemap-data.yml
@@ -4,6 +4,7 @@ env:
   PKGDIR: "packages/basemap_data"
   PYTHONWARNINGS: "ignore:DEPRECATION"
   PIP_DISABLE_PIP_VERSION_CHECK: 1
+  PIP_PREFER_BINARY: 1
   PIP_TIMEOUT: 10
   PIP_RETRIES: 0
 
@@ -114,9 +115,9 @@ jobs:
           name: artifacts-build
           path: ${{ env.PKGDIR }}/dist
       -
-        name: Install requirements
+        name: Install upload requirements
         run: |
-          pip install --prefer-binary twine
+          pip install twine
       -
         name: Upload distributables
         env:
diff --git a/.github/workflows/basemap-for-manylinux.yml b/.github/workflows/basemap-for-manylinux.yml
index 7684d139f..1d3f43cd6 100644
--- a/.github/workflows/basemap-for-manylinux.yml
+++ b/.github/workflows/basemap-for-manylinux.yml
@@ -4,6 +4,7 @@ env:
   PKGDIR: "packages/basemap"
   PYTHONWARNINGS: "ignore:DEPRECATION"
   PIP_DISABLE_PIP_VERSION_CHECK: 1
+  PIP_PREFER_BINARY: 1
   PIP_TIMEOUT: 10
   PIP_RETRIES: 0
 
@@ -59,7 +60,7 @@ jobs:
         name: Install library requirements
         run: |
           cd ${{ env.PKGDIR }}
-          pip install --prefer-binary -r requirements.txt
+          pip install -r requirements.txt
       -
         name: Run Flake8
         run: |
@@ -186,7 +187,7 @@ jobs:
           export NUMPY_INCLUDE_PATH=${sitepkgdir}/numpy/core/include
           if [ "${{ matrix.python-version }}" = "3.11" ]; then
               kwds="--no-build-isolation"
-              pip install setuptools wheel "cython >= 0.29, < 3.1"
+              pip install setuptools wheel "cython >= 0.29, < 3.0"
           fi
           cd ${{ env.PKGDIR }}
           python setup.py sdist
@@ -223,10 +224,6 @@ jobs:
         with:
           name: artifacts-build-${{ matrix.arch }}-${{ matrix.python-version }}
           path: ${{ env.PKGDIR }}/dist
-      -
-        name: Fix APT sources
-        run: |
-          sed -i 's|deb\.debian\.org|archive\.debian\.org|g' /etc/apt/sources.list
       -
         name: Install auditwheel
         run: |
@@ -272,10 +269,6 @@ jobs:
         with:
           name: artifacts-build-${{ matrix.arch }}-${{ matrix.python-version }}
           path: ${{ env.PKGDIR }}/dist
-      -
-        name: Fix APT sources
-        run: |
-          sed -i 's|deb\.debian\.org|archive\.debian\.org|g' /etc/apt/sources.list
       -
         name: Install numpy from source
         run: |
@@ -286,7 +279,7 @@ jobs:
       -
         name: Install package
         run: |
-          pip install --prefer-binary ${{ env.PKGDIR }}/dist/*-manylinux1*.whl
+          pip install ${{ env.PKGDIR }}/dist/*-manylinux1*.whl
       -
         name: Test package
         run: |
@@ -314,9 +307,9 @@ jobs:
           name: artifacts-build-${{ matrix.arch }}-${{ matrix.python-version }}
           path: ${{ env.PKGDIR }}/dist
       -
-        name: Install requirements
+        name: Install upload requirements
         run: |
-          pip install --prefer-binary twine
+          pip install twine
       -
         name: Upload distributables
         env:
diff --git a/.github/workflows/basemap-for-windows.yml b/.github/workflows/basemap-for-windows.yml
index 3242acf6c..ff93b0d4f 100644
--- a/.github/workflows/basemap-for-windows.yml
+++ b/.github/workflows/basemap-for-windows.yml
@@ -4,6 +4,7 @@ env:
   PKGDIR: "packages/basemap"
   PYTHONWARNINGS: "ignore:DEPRECATION"
   PIP_DISABLE_PIP_VERSION_CHECK: 1
+  PIP_PREFER_BINARY: 1
   PIP_TIMEOUT: 10
   PIP_RETRIES: 0
 
@@ -51,7 +52,7 @@ jobs:
           path: .
       -
         name: Set Python
-        uses: actions/setup-python@v4
+        uses: pylegacy/actions/setup-pyenv-win@v2
         with:
           architecture: ${{ matrix.arch }}
           python-version: ${{ matrix.python-version }}
@@ -68,7 +69,7 @@ jobs:
         name: Install library requirements
         run: |
           cd ${{ env.PKGDIR }}
-          pip install --prefer-binary -r requirements.txt
+          python -m pip install -r requirements.txt
       -
         name: Run Flake8
         run: |
@@ -117,7 +118,7 @@ jobs:
           cmake-version: "3.14.7"
       -
         name: Set Python
-        uses: actions/setup-python@v4
+        uses: pylegacy/actions/setup-pyenv-win@v2
         with:
           architecture: ${{ matrix.arch }}
           python-version: "3.6"
@@ -167,7 +168,7 @@ jobs:
           version: ${{ env.msvc-toolset }}
       -
         name: Set Python
-        uses: actions/setup-python@v4
+        uses: pylegacy/actions/setup-pyenv-win@v2
         with:
           architecture: ${{ matrix.arch }}
           python-version: ${{ matrix.python-version }}
@@ -197,9 +198,9 @@ jobs:
         run: |
           cd ${{ env.PKGDIR }}
           $env:GEOS_DIR = "$env:GITHUB_WORKSPACE/${{ env.PKGDIR }}/extern"
-          pip install -r requirements-setup.txt
+          python -m pip install -r requirements-setup.txt
           python setup.py sdist
-          pip wheel -w dist --no-deps (Get-Item dist/*.zip)
+          python -m pip wheel -w dist --no-deps (Get-Item dist/*.zip)
       -
         name: Upload build artifacts
         uses: actions/upload-artifact@v1
@@ -221,10 +222,14 @@ jobs:
     steps:
       -
         name: Set Python
-        uses: actions/setup-python@v4
+        uses: pylegacy/actions/setup-pyenv-win@v2
         with:
           architecture: ${{ matrix.arch }}
           python-version: ${{ matrix.python-version }}
+      -
+        name: Set Python base packages
+        run: |
+          python -m pip install --upgrade pip setuptools wheel
       -
         name: Download build artifacts
         uses: actions/download-artifact@v1
@@ -234,16 +239,12 @@ jobs:
       -
         name: Install package
         run: |
-          pip install --prefer-binary (Get-Item ${{ env.PKGDIR }}/dist/*-win*.whl)
-        # We need to skip Py311 x86 because of missing pyproj wheels.
-        if: matrix.arch != 'x86' || matrix.python-version != '3.11'
+          python -m pip install (Get-Item ${{ env.PKGDIR }}/dist/*-win*.whl)
       -
         name: Test package
         run: |
           python -c "from mpl_toolkits.basemap import Basemap"
           python -c "from mpl_toolkits.basemap import cm"
-        # We need to skip Py311 x86 because of missing pyproj wheels.
-        if: matrix.arch != 'x86' || matrix.python-version != '3.11'
 
   upload:
     strategy:
@@ -260,7 +261,7 @@ jobs:
     steps:
       -
         name: Set Python
-        uses: actions/setup-python@v4
+        uses: pylegacy/actions/setup-pyenv-win@v2
         with:
           architecture: ${{ matrix.arch }}
           python-version: ${{ matrix.python-version }}
@@ -271,9 +272,9 @@ jobs:
           name: artifacts-build-${{ matrix.arch }}-${{ matrix.python-version }}
           path: ${{ env.PKGDIR }}/dist
       -
-        name: Install requirements
+        name: Install upload requirements
         run: |
-          pip install --prefer-binary twine
+          python -m pip install twine
       -
         name: Upload distributables
         env:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1dd04705e..15a3918fb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,25 @@ https://keepachangelog.com/en/1.0.0/
 https://semver.org/spec/v2.0.0.html
 
 
+## [1.3.8] - 2023-08-18
+
+### Changed
+- Upgrade `numpy` upper pin to 1.26.
+- Upgrade `pyproj` upper pin to 3.7.
+- Upgrade optional `pillow` upper pin to 10.1.0.
+- Upgrade documentation and linting dependencies.
+
+### Fixed
+- Fix Cygwin build error due to GCC passing `"--enable-new-dtags"` to
+  the linker (PR [#582] by @DWesl, solves issue [#579]).
+- Fix deprecated `Image.ANTIALIAS` with `Image.LANCZOS` when `pillow`
+  version is at least 10.0.0 (PR [#580] by @cgohlke).
+- Downgrade upper pin for Cython requirement from 3.1 to 3.0 due to
+  build error triggered by `_geoslib.pyx` (solves issues [#581] and
+  [#583]).
+- Downgrade `numpy` lower pin to `numpy >= 1.21` for Python >= 3.8,
+  whose upgrade is delayed until `basemap` 1.4.0.
+
 ## [1.3.7] - 2023-05-04
 
 ### Changed
@@ -957,6 +976,16 @@ https://semver.org/spec/v2.0.0.html
 - Fix glitches in drawing of parallels and meridians.
 
 
+[#583]:
+https://github.com/matplotlib/basemap/issues/583
+[#582]:
+https://github.com/matplotlib/basemap/pull/582
+[#581]:
+https://github.com/matplotlib/basemap/issues/581
+[#580]:
+https://github.com/matplotlib/basemap/pull/580
+[#579]:
+https://github.com/matplotlib/basemap/issues/579
 [#573]:
 https://github.com/matplotlib/basemap/issues/573
 [#564]:
@@ -1051,7 +1080,9 @@ https://github.com/matplotlib/basemap/issues/228
 https://github.com/matplotlib/basemap/issues/179
 
 [Unreleased]:
-https://github.com/matplotlib/basemap/compare/v1.3.7...develop
+https://github.com/matplotlib/basemap/compare/v1.3.8...develop
+[1.3.8]:
+https://github.com/matplotlib/basemap/compare/v1.3.7...v1.3.8
 [1.3.7]:
 https://github.com/matplotlib/basemap/compare/v1.3.6...v1.3.7
 [1.3.6]:
diff --git a/packages/basemap/.pylintrc b/packages/basemap/.pylintrc
index 614b09142..5d3516905 100644
--- a/packages/basemap/.pylintrc
+++ b/packages/basemap/.pylintrc
@@ -76,8 +76,11 @@ disable=
     assignment-from-none,
     # Allow freedom with error raises.
     raise-missing-from,
-    # Allow freedom with string formatting.
-    consider-using-f-string
+    # Allow freedom with using lambda functions.
+    unnecessary-lambda-assignment,
+    # Allow freedom with old ways of using basic types.
+    consider-using-f-string,
+    use-dict-literal
 
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option
@@ -251,12 +254,6 @@ max-line-length=99
 # Maximum number of lines in a module.
 max-module-lines=999
 
-# List of optional constructs for which whitespace checking is disabled. `dict-
-# separator` is used to allow tabulation in dicts, etc.: {1  : 1,\n222: 2}.
-# `trailing-comma` allows a space between comma and closing bracket: (a, ).
-# `empty-line` allows space-only lines.
-no-space-check=dict-separator
-
 # Allow the body of a class to be on the same line as the declaration if body
 # contains single statement.
 single-line-class-stmt=no
@@ -519,6 +516,6 @@ preferred-modules=
 [EXCEPTIONS]
 
 # Exceptions that will emit a warning when being caught. Defaults to
-# "BaseException, Exception".
-overgeneral-exceptions=BaseException,
-                       Exception
+# "builtins.BaseException, builtins.Exception".
+overgeneral-exceptions=builtins.BaseException,
+                       builtins.Exception
diff --git a/packages/basemap/README.md b/packages/basemap/README.md
index 4b408b7a0..393bde003 100644
--- a/packages/basemap/README.md
+++ b/packages/basemap/README.md
@@ -45,6 +45,6 @@ https://spdx.org/licenses/LGPL-2.1-only.html
 https://spdx.org/licenses/MIT.html
 
 [`LICENSE`]:
-https://github.com/matplotlib/basemap/blob/v1.3.7/packages/basemap/LICENSE
+https://github.com/matplotlib/basemap/blob/v1.3.8/packages/basemap/LICENSE
 [`LICENSE.geos`]:
-https://github.com/matplotlib/basemap/blob/v1.3.7/packages/basemap/LICENSE.geos
+https://github.com/matplotlib/basemap/blob/v1.3.8/packages/basemap/LICENSE.geos
diff --git a/packages/basemap/pyproject.toml b/packages/basemap/pyproject.toml
index 26e78d87a..1e86505d7 100644
--- a/packages/basemap/pyproject.toml
+++ b/packages/basemap/pyproject.toml
@@ -8,7 +8,7 @@ requires = [
     'numpy == 1.16.6; sys_platform != "darwin" and (python_version >= "3.7" and python_version <= "3.9")',
     'numpy == 1.16.6; python_version == "2.7" or (python_version >= "3.4" and python_version <= "3.6")',
     'numpy == 1.11.3; python_version == "2.6" or (python_version >= "3.2" and python_version <= "3.3")',
-    'cython >= 0.29, < 3.1; python_version >= "3.3" or python_version < "3.0"',
+    'cython >= 0.29, < 3.0; python_version >= "3.3" or python_version < "3.0"',
     'cython >= 0.26, < 0.27; python_version == "3.2"'
 ]
 build-backend = "setuptools.build_meta"
diff --git a/packages/basemap/requirements-doc.txt b/packages/basemap/requirements-doc.txt
index cdea62cb0..75248eed8 100644
--- a/packages/basemap/requirements-doc.txt
+++ b/packages/basemap/requirements-doc.txt
@@ -1 +1,2 @@
-sphinx >= 3.0, < 5.0; python_version >= "3.6"
\ No newline at end of file
+sphinx >= 5.3, < 6.3; python_version >= "3.6"
+furo >= 2022.4.7, < 2023.5.21; python_version >= "3.6"
diff --git a/packages/basemap/requirements-lint.txt b/packages/basemap/requirements-lint.txt
index b5cdc5230..5669b9475 100644
--- a/packages/basemap/requirements-lint.txt
+++ b/packages/basemap/requirements-lint.txt
@@ -5,9 +5,13 @@ flake8 >= 2.6, < 4.0; python_version == "2.7"
 flake8 >= 2.6, < 3.0; python_version == "3.2"
 flake8 >= 2.6, < 3.0; python_version == "3.3"
 flake8 >= 2.6, < 3.9; python_version == "3.4"
-flake8 >= 2.6, < 4.1; python_version >= "3.5"
+flake8 >= 2.6, < 7.1; python_version >= "3.5"
 
 astroid >= 1.6, < 2.0; python_version == "2.7"
-astroid >= 2.4, < 3.0; python_version >= "3.5"
+astroid >= 2.4, < 2.5; python_version == "3.5"
+astroid >= 2.5, < 2.7; python_version == "3.6"
+astroid >= 2.8, < 3.0; python_version >= "3.7"
 pylint >= 1.9, < 2.0; python_version == "2.7"
-pylint >= 2.6, < 3.0; python_version >= "3.5"
+pylint >= 2.6, < 2.7; python_version == "3.5"
+pylint >= 2.7, < 2.10; python_version == "3.6"
+pylint >= 2.11, < 3.0; python_version >= "3.7"
diff --git a/packages/basemap/requirements-setup.txt b/packages/basemap/requirements-setup.txt
index 683c97388..376b9f7a0 100644
--- a/packages/basemap/requirements-setup.txt
+++ b/packages/basemap/requirements-setup.txt
@@ -1,6 +1,4 @@
 cython >= 0.29, < 3.0; python_version == "2.6"
 cython >= 0.29, < 3.0; python_version == "2.7"
 cython >= 0.26, < 0.27; python_version == "3.2"
-cython >= 0.29, < 3.0; python_version == "3.3"
-cython >= 0.29, < 3.0; python_version == "3.4"
-cython >= 0.29, < 3.1; python_version >= "3.5"
+cython >= 0.29, < 3.0; python_version >= "3.3"
diff --git a/packages/basemap/requirements-test.txt b/packages/basemap/requirements-test.txt
index 1e4659b6a..504c7f5b7 100644
--- a/packages/basemap/requirements-test.txt
+++ b/packages/basemap/requirements-test.txt
@@ -28,4 +28,4 @@ pillow >= 4.3.0, < 5.0.0; python_version == "3.3"
 pillow >= 5.4.0, < 6.0.0; python_version == "3.4"
 pillow >= 7.1.0, < 8.0.0; python_version == "3.5"
 pillow >= 8.3.2, < 9.0.0; python_version == "3.6"
-pillow >= 9.4.0, < 10.0.0; python_version >= "3.7"
+pillow >= 9.4.0, < 10.1.0; python_version >= "3.7"
diff --git a/packages/basemap/requirements.txt b/packages/basemap/requirements.txt
index 5b4211b89..7c18f9a3e 100644
--- a/packages/basemap/requirements.txt
+++ b/packages/basemap/requirements.txt
@@ -8,7 +8,7 @@ numpy >= 1.15, < 1.17; python_version == "3.4"
 numpy >= 1.16, < 1.19; python_version == "3.5"
 numpy >= 1.19, < 1.20; python_version == "3.6"
 numpy >= 1.21, < 1.22; python_version == "3.7"
-numpy >= 1.22, < 1.25; python_version >= "3.8"
+numpy >= 1.21, < 1.26; python_version >= "3.8"
 
 cycler < 0.11; python_version == "3.2"
 pyparsing >= 1.5, < 2.4.1; python_version == "2.6"
@@ -25,7 +25,7 @@ pyproj >= 1.9.3, < 2.3.0; python_version == "2.7"
 pyproj >= 1.9.3, < 1.9.6; python_version == "3.2"
 pyproj >= 1.9.3, < 2.1.0; python_version == "3.3"
 pyproj >= 1.9.3, < 2.1.0; python_version == "3.4"
-pyproj >= 1.9.3, < 3.6.0; python_version >= "3.5"
+pyproj >= 1.9.3, < 3.7.0; python_version >= "3.5"
 
 pyshp >= 1.2, < 2.0; python_version == "2.6"
 pyshp >= 1.2, < 2.4; python_version >= "2.7"
diff --git a/packages/basemap/setup.cfg b/packages/basemap/setup.cfg
index 3195b621d..3247f242e 100644
--- a/packages/basemap/setup.cfg
+++ b/packages/basemap/setup.cfg
@@ -8,19 +8,28 @@ formats = zip
 
 [flake8]
 ignore =
-    E301,E306,E402,E501,E731,W503,W504
+    E301,E306,E402,E501,E731,F401,F403,W503,W504
 # E301: expected-blank-line-missing
 # E306: no-blank-line-before-nested-def
 # E402: module-import-not-at-top-file
 # E501: line-too-long
 # E731: used-lambda
+# F401: unused-import
+# F403: wildcard-import
 # W503: line-break-before-binary-operator
 # W504: line-break-after-binary-operator
 
 [tool:pytest]
 filterwarnings =
+    error
+    ignore::DeprecationWarning:coverage.pytracer:
     ignore::DeprecationWarning:unittest2.compatibility:
 
+[coverage:paths]
+source =
+    src
+    /opt/pyenv/versions/**/site-packages
+
 [coverage:report]
 exclude_lines =
     pragma: no cover
diff --git a/packages/basemap/setup.py b/packages/basemap/setup.py
index 69b23963c..c4f998f77 100644
--- a/packages/basemap/setup.py
+++ b/packages/basemap/setup.py
@@ -111,7 +111,7 @@ def run(self):
     library_dirs.append(os.path.join(geos_install_prefix, "lib"))
     library_dirs.append(os.path.join(geos_install_prefix, "lib64"))
     runtime_library_dirs = library_dirs
-    if os.name == "nt":
+    if os.name == "nt" or sys.platform == "cygwin":
         # On Windows:
         # - DLLs get installed under `bin`.
         # - We need to inject later the DLL in the wheel using `data_files`.
@@ -119,7 +119,7 @@ def run(self):
         #   `distutils` bug (http://bugs.python.org/issue2437).
         library_dirs.append(os.path.join(geos_install_prefix, "bin"))
         runtime_library_dirs = []
-        dlls = glob.glob(os.path.join(geos_install_prefix, "*", "geos_c.dll"))
+        dlls = glob.glob(os.path.join(geos_install_prefix, "*", "*geos_c*.dll"))
         if dlls:
             data_files.append(("../..", sorted(dlls)))
 
@@ -172,7 +172,7 @@ def run(self):
     "name":
         "basemap",
     "version":
-        "1.3.7",
+        "1.3.8",
     "license":
         "MIT",
     "description":
diff --git a/packages/basemap/src/mpl_toolkits/basemap/__init__.py b/packages/basemap/src/mpl_toolkits/basemap/__init__.py
index f09e16f42..8e2715cc7 100644
--- a/packages/basemap/src/mpl_toolkits/basemap/__init__.py
+++ b/packages/basemap/src/mpl_toolkits/basemap/__init__.py
@@ -54,7 +54,7 @@
 import functools
 
 
-__version__ = "1.3.7"
+__version__ = "1.3.8"
 
 # basemap data files now installed in lib/matplotlib/toolkits/basemap/data
 # check to see if environment variable BASEMAPDATA set to a directory,
@@ -4107,7 +4107,7 @@ def warpimage(self,image="bluemarble",scale=None,**kwargs):
                 w, h = pilImage.size
                 width = int(np.round(w*scale))
                 height = int(np.round(h*scale))
-                pilImage = pilImage.resize((width,height),Image.ANTIALIAS)
+                pilImage = pilImage.resize((width,height),Image.LANCZOS)
             if _matplotlib_version >= '1.2':
                 # orientation of arrays returned by pil_to_array
                 # changed (https://github.com/matplotlib/matplotlib/pull/616)
diff --git a/packages/basemap/src/mpl_toolkits/basemap/proj.py b/packages/basemap/src/mpl_toolkits/basemap/proj.py
index 7c733bbb4..9c0692e87 100644
--- a/packages/basemap/src/mpl_toolkits/basemap/proj.py
+++ b/packages/basemap/src/mpl_toolkits/basemap/proj.py
@@ -11,7 +11,7 @@
     from matplotlib.cbook import dedent
 
 
-__version__ = "1.3.7"
+__version__ = "1.3.8"
 
 _dg2rad = math.radians(1.)
 _rad2dg = math.degrees(1.)