diff --git a/README.rst b/README.rst
index 4121c8c..7e94455 100644
--- a/README.rst
+++ b/README.rst
@@ -18,7 +18,7 @@ Curver is a program for performing calculations in the curve complex.
 It implements the Bell--Webb algorithm to determine the Nielsen--Thurston type of a mapping class.
 This algorithm runs in polynomial time but the constants involved currently make this implementation impractical.
 
-Curver officially supports Python 3.7 -- 3.11.
+Curver officially supports Python 3.8 -- 3.12.
 Unoffically, it also runs on `PyPy`_ and `Sage`_ with some care.
 
 Quickstart
diff --git a/appveyor.yml b/appveyor.yml
new file mode 100644
index 0000000..fa1a645
--- /dev/null
+++ b/appveyor.yml
@@ -0,0 +1,36 @@
+
+build: false
+
+environment:
+  matrix:
+    - PYTHON: "C:\\Python38"
+      TOXENV: "lint"
+
+    - PYTHON: "C:\\Python38"
+      TOXENV: "py38"
+
+    - PYTHON: "C:\\Python39"
+      TOXENV: "py39"
+
+    - PYTHON: "C:\\Python310"
+      TOXENV: "py310"
+
+    - PYTHON: "C:\\Python311"
+      TOXENV: "py311"
+
+    - PYTHON: "C:\\Python312"
+      TOXENV: "py312"
+
+init:
+  - set "PATH=%PYTHON%;%PYTHON%\\Scripts;%PATH%"
+  - echo "%PYTHON%"
+  - python -c "import sys; print(sys.version)"
+  - pip --version
+
+install:
+  - pip install virtualenv --upgrade
+  - pip install tox
+
+test_script:
+  - tox -- --hypothesis-profile=ci --durations=20 -v
+
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
new file mode 100644
index 0000000..263f1de
--- /dev/null
+++ b/azure-pipelines.yml
@@ -0,0 +1,50 @@
+
+trigger:
+  branches:
+    include:
+    - '*'
+  tags:
+    include:
+    - 'v*'
+
+jobs:
+- job: 'Test'
+  pool:
+    vmImage: 'Ubuntu-22.04'
+  strategy:
+    matrix:
+      Lint:
+        python.version: '3.8'
+        TOXENV: 'lint'
+      Python38:
+        python.version: '3.8'
+        TOXENV: 'py38'
+      Python39:
+        python.version: '3.9'
+        TOXENV: 'py39'
+      Python310:
+        python.version: '3.10'
+        TOXENV: 'py310'
+      Python311:
+        python.version: '3.11'
+        TOXENV: 'py311'
+      Python312:
+        python.version: '3.12'
+        TOXENV: 'py312'
+  
+  steps:
+  - task: UsePythonVersion@0
+    displayName: 'Use Python $(python.version)'
+    inputs:
+      versionSpec: '$(python.version)'
+  - script: pip install tox
+    displayName: 'Install tox'
+  - script: tox -- --hypothesis-profile=ci --durations=20 --junitxml=results.xml -v
+    displayName: 'Run tox'
+  - task: PublishTestResults@2
+    displayName: 'Publish results file'
+    condition: startswith(variables['TOX_ENV'], 'py')
+    inputs:
+      testResultsFiles: 'results.xml'
+      testRunTitle: 'Test results for Python $(python.version)'
+
diff --git a/curver/kernel/utilities.py b/curver/kernel/utilities.py
index 0b411a4..8baf667 100644
--- a/curver/kernel/utilities.py
+++ b/curver/kernel/utilities.py
@@ -59,7 +59,7 @@ def maximin(*iterables):
         for item in iterable:
             if item <= result:
                 break
-            if item < best:
+            if item < best:  # pylint: disable=consider-using-min-builtin
                 best = item
         else:  # We never broke out, so best > result
             result = best
diff --git a/tests/conftest.py b/tests/conftest.py
index 132a0b0..19deb41 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -14,8 +14,8 @@ def pytest_collection_modifyitems(config, items):
                 item.add_marker(skip_slow)
 
 
-settings.register_profile('ci', settings(deadline=None, suppress_health_check=(HealthCheck.too_slow,)))
-settings.register_profile('dev', settings(deadline=None, suppress_health_check=(HealthCheck.too_slow,), max_examples=5))
-settings.register_profile('debug', settings(deadline=None, suppress_health_check=(HealthCheck.too_slow,), max_examples=5, verbosity=Verbosity.verbose))
+settings.register_profile('ci', settings(deadline=None, suppress_health_check=(HealthCheck.too_slow, HealthCheck.differing_executors)))
+settings.register_profile('dev', settings(deadline=None, suppress_health_check=(HealthCheck.too_slow, HealthCheck.differing_executors), max_examples=5))
+settings.register_profile('debug', settings(deadline=None, suppress_health_check=(HealthCheck.too_slow, HealthCheck.differing_executors), max_examples=5, verbosity=Verbosity.verbose))
 settings.load_profile(os.getenv(u'HYPOTHESIS_PROFILE', 'dev'))