diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bc48b3c..60bdcb1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,23 +14,30 @@ on:
 
 jobs:
   build:
-    name: Python ${{ matrix.python-version }}
-    runs-on: ubuntu-latest
+    name: Python ${{ matrix.python-version }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
         python-version:
-          - "3.8"
-          - "3.9"
           - "3.10"
           - "3.11"
           - "3.12"
           - "3.13"
+          - "3.14"
+        os:
+          - ubuntu-latest
+          - windows-latest
 
     steps:
-      - name: Install OS dependencies
+      - name: Install OS dependencies (Linux)
+        if: runner.os == 'Linux'
         run: sudo apt-get update && sudo apt-get install -y graphviz
 
+      - name: Install OS dependencies (Windows)
+        if: runner.os == 'Windows'
+        run: choco install graphviz --version=2.38.0.20190211
+
       - name: Git clone
         uses: actions/checkout@v4
 
@@ -38,22 +45,17 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: "${{ matrix.python-version }}"
+          cache: pip
+          cache-dependency-path: |
+            setup.py
 
-      - name: Pip cache
-        uses: actions/cache@v4
-        with:
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('setup.py') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-${{ matrix.python-version }}-
-            ${{ runner.os }}-pip-
 
       - name: Install Python dependencies
         run: |
           python -m pip install -U pip
           python -m pip install -U setuptools wheel
           python -m pip install -U coverage
-          python -m pip install -e .[test]
+          python -m pip install -e '.[test]'
 
       - name: Run tests
         run: coverage run tests.py
diff --git a/CHANGES.rst b/CHANGES.rst
index 54c7921..da0a97a 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -9,9 +9,11 @@ Changes
 - Fix :func:`get_leaking_objects` with an ``objects`` argument to not ignore
   references from other sources.  Closes `issue 82
   <https://github.com/mgedmin/objgraph/issues/82>`_.
-  Also fix ``get_leaking_objects([])`` causing an UnboudLocalError.
+  Also fix ``get_leaking_objects([])`` causing an UnboundLocalError.
 
-- Drop support for Python 3.7.
+- Add support for Python 3.14.
+
+- Drop support for Python 3.7, 3.8, and 3.9.
 
 
 3.6.2 (2024-10-10)
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index a9758b6..0000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-version: build-{build}-{branch}
-
-environment:
-  matrix:
-    # https://www.appveyor.com/docs/installed-software#python lists available
-    # versions
-    - PYTHON: "C:\\Python38"
-    - PYTHON: "C:\\Python39"
-    - PYTHON: "C:\\Python310"
-    - PYTHON: "C:\\Python311"
-    - PYTHON: "C:\\Python312"
-    - PYTHON: "C:\\Python313"
-
-init:
-  - "echo %PYTHON%"
-
-install:
-  - ps: |
-      if (-not (Test-Path $env:PYTHON)) {
-        curl -o install_python.ps1 https://raw.githubusercontent.com/matthew-brett/multibuild/11a389d78892cf90addac8f69433d5e22bfa422a/install_python.ps1
-        .\install_python.ps1
-      }
-  - ps: if (-not (Test-Path $env:PYTHON)) { throw "No $env:PYTHON" }
-  - "set PATH=%PYTHON%;%PYTHON%\\Scripts;%PATH%"
-  - python --version
-  - pip install -U virtualenv  # upgrade pip in tox's virtualenvs
-  - pip install tox
-  - choco install graphviz --version=2.38.0.20190211
-  - dot -V
-
-build: off
-
-test_script:
-  - tox -e py
diff --git a/setup.py b/setup.py
index 1cfc2f1..583a53b 100755
--- a/setup.py
+++ b/setup.py
@@ -76,16 +76,15 @@ def build_images(doctests=()):
         'License :: OSI Approved :: MIT License',
         'Operating System :: OS Independent',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 3.8',
-        'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
         'Programming Language :: Python :: 3.13',
+        'Programming Language :: Python :: 3.14',
     ],
     keywords='object graph visualization graphviz garbage collection',
     py_modules=['objgraph'],
-    python_requires=">=3.8",
+    python_requires=">=3.10",
     extras_require={
         'ipython': [
             'graphviz',  # just for ipython support currently
diff --git a/tox.ini b/tox.ini
index 16134f2..99258a1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py38, py39, py310, py311, py312, py313
+envlist = py310, py311, py312, py313, py314
 
 [testenv]
 deps =