diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..f643837
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,22 @@
+name: ci
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+jobs:
+  pytest:
+    strategy:
+      fail-fast: false
+      matrix:  # https://github.com/actions/python-versions/releases
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]  # , "3.14", "pypy-3.11"]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/setup-python@v6
+        with:
+          python-version: ${{ matrix.python-version }}
+          allow-prereleases: true
+      - run: pip install pytest
+      - run: pip install --editable ".[en]"
+      - run: pytest || true  # There are no tests.
+      - run: python examples/usage.py
diff --git a/pyproject.toml b/pyproject.toml
index e0ee5aa..6880280 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,7 +15,7 @@ classifiers = [
     "License :: OSI Approved :: Apache Software License",
     "Operating System :: OS Independent",
 ]
-requires-python = ">=3.8, <3.14"
+requires-python = ">=3.8, <3.15"
 dependencies = [
     "addict",
     "pip>=25.0.1", 
@@ -24,7 +24,7 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-en = ["num2words", "spacy", "spacy-curated-transformers", "phonemizer-fork", "espeakng-loader", "torch", "transformers"]
+en = ["num2words", "spacy<4", "spacy-curated-transformers", "phonemizer-fork", "espeakng-loader", "torch", "transformers"]
 ja = ["fugashi", "jaconv", "mojimoji", "unidic", "pyopenjtalk"]
 ko = ["jamo", "nltk"]
 zh = ["jieba", "ordered-set", "pypinyin", "cn2an", "pypinyin-dict"]