diff --git a/.github/workflows/pytest-remote-data.yml b/.github/workflows/pytest-remote-data.yml
index 06adfb1807..ee3ffd3d95 100644
--- a/.github/workflows/pytest-remote-data.yml
+++ b/.github/workflows/pytest-remote-data.yml
@@ -56,7 +56,7 @@ jobs:
     strategy:
       fail-fast: false  # don't cancel other matrix jobs when one fails
       matrix:
-        python-version: [3.7, 3.8, 3.9, "3.10"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
         suffix: ['']  # the alternative to "-min"
         include:
           - python-version: 3.7
diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 31d4c117c5..f342811119 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -12,7 +12,7 @@ jobs:
       fail-fast: false  # don't cancel other matrix jobs when one fails
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.7, 3.8, 3.9, "3.10"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
         environment-type: [conda, bare]
         suffix: ['']  # placeholder as an alternative to "-min"
         include:
@@ -40,12 +40,13 @@ jobs:
 
       - name: Install Conda environment with Micromamba
         if: matrix.environment-type == 'conda'
-        uses: mamba-org/provision-with-micromamba@v12
+        uses: mamba-org/provision-with-micromamba@v14
         with:
           environment-file: ${{ env.REQUIREMENTS }}
           cache-downloads: true
           extra-specs: |
             python=${{ matrix.python-version }}
+          channel-priority: flexible
         env:
           # build requirement filename.  First replacement is for the python
           # version, second is to add "-min" if needed
@@ -58,7 +59,7 @@ jobs:
 
       - name: Install bare Python ${{ matrix.python-version }}${{ matrix.suffix }}
         if: matrix.environment-type == 'bare'
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
 
diff --git a/ci/requirements-py3.10.yml b/ci/requirements-py3.10.yml
index c6f95fcbc8..8e83c8ab89 100644
--- a/ci/requirements-py3.10.yml
+++ b/ci/requirements-py3.10.yml
@@ -7,8 +7,8 @@ dependencies:
     - cython
     - ephem
     - h5py
-    # - netcdf4  # pulls in a different version of numpy with ImportError
-    # - numba  # python 3.9 compat in early 2021
+    - netcdf4
+    - numba
     - numpy >= 1.16.0
     - pandas >= 0.25.0
     - pip
@@ -23,9 +23,7 @@ dependencies:
     - pytz
     - requests
     - scipy >= 1.4.0
-    - shapely  # pvfactors dependency
-    # - siphon  # conda-forge
     - statsmodels
     - pip:
-        # - nrel-pysam>=2.0  # install error on windows
-        - pvfactors==1.4.1
+        - nrel-pysam>=2.0
+        - pvfactors==1.5.2
diff --git a/ci/requirements-py3.11.yml b/ci/requirements-py3.11.yml
new file mode 100644
index 0000000000..ee4e7a9608
--- /dev/null
+++ b/ci/requirements-py3.11.yml
@@ -0,0 +1,29 @@
+name: test_env
+channels:
+    - defaults
+    - conda-forge
+dependencies:
+    - coveralls
+    - cython
+    - ephem
+    - h5py
+    - netcdf4
+    # - numba  # https://github.com/numba/numba/issues/8304
+    - numpy >= 1.16.0
+    - pandas >= 0.25.0
+    - pip
+    - pytest
+    - pytest-cov
+    - pytest-mock
+    - requests-mock
+    - pytest-timeout
+    - pytest-rerunfailures
+    - pytest-remotedata
+    - python=3.11
+    - pytz
+    - requests
+    - scipy >= 1.2.0
+    - statsmodels
+    - pip:
+        # - nrel-pysam>=2.0
+        - pvfactors==1.5.2
diff --git a/ci/requirements-py3.7.yml b/ci/requirements-py3.7.yml
index 442e5d1adc..f29373a9b6 100644
--- a/ci/requirements-py3.7.yml
+++ b/ci/requirements-py3.7.yml
@@ -23,9 +23,8 @@ dependencies:
     - pytz
     - requests
     - scipy >= 1.4.0
-    - shapely  # pvfactors dependency
     - siphon  # conda-forge
     - statsmodels
     - pip:
         - nrel-pysam>=2.0
-        - pvfactors==1.4.1
+        - pvfactors==1.5.2
diff --git a/ci/requirements-py3.8.yml b/ci/requirements-py3.8.yml
index 013a7e4684..b16454523a 100644
--- a/ci/requirements-py3.8.yml
+++ b/ci/requirements-py3.8.yml
@@ -23,9 +23,8 @@ dependencies:
     - pytz
     - requests
     - scipy >= 1.4.0
-    - shapely  # pvfactors dependency
     - siphon  # conda-forge
     - statsmodels
     - pip:
         - nrel-pysam>=2.0
-        - pvfactors==1.4.1
+        - pvfactors==1.5.2
diff --git a/ci/requirements-py3.9.yml b/ci/requirements-py3.9.yml
index b208a10c24..906351fd3e 100644
--- a/ci/requirements-py3.9.yml
+++ b/ci/requirements-py3.9.yml
@@ -7,8 +7,8 @@ dependencies:
     - cython
     - ephem
     - h5py
-    # - netcdf4  # pulls in a different version of numpy with ImportError
-    # - numba  # python 3.9 compat in early 2021
+    - netcdf4
+    - numba
     - numpy >= 1.16.0
     - pandas >= 0.25.0
     - pip
@@ -23,9 +23,7 @@ dependencies:
     - pytz
     - requests
     - scipy >= 1.4.0
-    - shapely  # pvfactors dependency
-    # - siphon  # conda-forge
     - statsmodels
     - pip:
-        # - nrel-pysam>=2.0  # install error on windows
-        - pvfactors==1.4.1
+        - nrel-pysam>=2.0
+        - pvfactors==1.5.2
diff --git a/docs/sphinx/source/whatsnew/v0.9.5.rst b/docs/sphinx/source/whatsnew/v0.9.5.rst
index dd2ad9c189..35e37af485 100644
--- a/docs/sphinx/source/whatsnew/v0.9.5.rst
+++ b/docs/sphinx/source/whatsnew/v0.9.5.rst
@@ -24,6 +24,7 @@ Bug fixes
 
 Testing
 ~~~~~~~
+* Added Python 3.11 to test suite. (:pull:`1582`)
 
 
 Documentation