diff --git a/release/kokoro/release_macos.sh b/release/kokoro/release_macos.sh
index 54b92fa..dd5f501 100644
--- a/release/kokoro/release_macos.sh
+++ b/release/kokoro/release_macos.sh
@@ -11,7 +11,7 @@ fi
 pip install -U keyring keyrings.google-artifactregistry-auth twine cibuildwheel
 
 echo "Installing CPython Mac Frameworks..."
-for pyver in "3.11.9" "3.12.4" "3.13.0" "3.14.3"; do
+for pyver in "3.10.11" "3.11.9" "3.12.4" "3.13.0" "3.14.3"; do
   echo "Downloading and installing Python ${pyver}..."
   curl -LO "https://www.python.org/ftp/python/${pyver}/python-${pyver}-macos11.pkg"
   sudo installer -pkg "python-${pyver}-macos11.pkg" -target /
diff --git a/release/pyproject.toml b/release/pyproject.toml
index d7aa211..c90f404 100644
--- a/release/pyproject.toml
+++ b/release/pyproject.toml
@@ -17,7 +17,7 @@ name = "cel-expr-python"
 # $VERSION is replaced with the desired version in build_wheel.sh.
 version = "$VERSION"
 description = "The CEL Python runtime"
-requires-python = ">=3.11"
+requires-python = ">=3.10"
 classifiers = [
   "Topic :: Software Development :: Interpreters",
   "Topic :: Software Development :: Libraries :: Python Modules",
@@ -38,7 +38,7 @@ where = ["."]
 exclude = ["codelab*", "conformance*", "custom_ext*", "release*", "testing*", "wheelhouse*"]
 
 [tool.cibuildwheel]
-build = "cp311-* cp312-* cp313-* cp314-*"
+build = "cp310-* cp311-* cp312-* cp313-* cp314-*"
 skip = "*musllinux* *win32* *i686*"
 test-command = "python {project}/cel_basic_test.py"
 build-verbosity = 1