diff --git a/.github/workflows/publish_wheels.yml b/.github/workflows/publish_wheels.yml
index 366b790..72ee7ea 100644
--- a/.github/workflows/publish_wheels.yml
+++ b/.github/workflows/publish_wheels.yml
@@ -51,6 +51,14 @@ jobs:
   
       - name: Install cibuildwheel
         run: python -m pip install cibuildwheel
+
+      # Install jaxlib from source for MacOS. Otherwise, jaxlib
+      # will have AVX instructions and the MacOS GitHub runners do not.
+      - name: Jaxlib source
+        run: |
+          if [[ ${{ matrix.os }} == 'macOS-latest' ]]; then
+            pip install jaxlib --no-binary
+          fi
   
       - name: Build wheels
         run: python -m cibuildwheel --output-dir dist
diff --git a/pyproject.toml b/pyproject.toml
index 36ee4ac..00eb7a3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ build-backend = "setuptools.build_meta"
 
 [tool.black]
 line-length = 100
-target-version = ['py39','py310','py311']
+target-version = ['py310','py311']
 
 [tool.cibuildwheel]
 before-build = "pip install setuptools wheel numpy"
diff --git a/setup.py b/setup.py
index b82971f..7577196 100644
--- a/setup.py
+++ b/setup.py
@@ -70,7 +70,7 @@ def run(self):
     packages=find_packages("src"),
     package_dir={"": "src"},
     package_data={"": ["src/tfc/py.typed"]},
-    python_requires=">=3.9",
+    python_requires=">=3.10",
     include_package_data=True,
     ext_modules=[BF],
     install_requires=[