From c69991d2edf765eb351f9f33061f071dd8efb352 Mon Sep 17 00:00:00 2001
From: tokoko <togurgenidze@gmail.com>
Date: Fri, 31 Oct 2025 06:17:22 +0000
Subject: [PATCH] chore: drop support for python 3.9

---
 .github/workflows/ruff.yml | 2 +-
 .github/workflows/test.yml | 2 +-
 pyproject.toml             | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/ruff.yml b/.github/workflows/ruff.yml
index a3ad67f..41c1176 100644
--- a/.github/workflows/ruff.yml
+++ b/.github/workflows/ruff.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python: ["3.9"]
+        python: ["3.10"]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout code
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 301ae32..29cfeb0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, ubuntu-latest, windows-latest]
-        python: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python: ["3.10", "3.11", "3.12", "3.13"]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout code
diff --git a/pyproject.toml b/pyproject.toml
index f2b65c3..677ef57 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ description = "A python package for Substrait."
 authors = [{name = "Substrait contributors", email = "substrait@googlegroups.com"}]
 license = {text = "Apache-2.0"}
 readme = "README.md"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dependencies = ["protobuf >=3.19.1,<6"]
 dynamic = ["version"]
 
@@ -28,6 +28,6 @@ build-backend = "setuptools.build_meta"
 [tool.ruff]
 respect-gitignore = true
 # should target minimum supported version
-target-version = "py39"
+target-version = "py310"
 # never autoformat upstream or generated code
 exclude = ["third_party/", "src/substrait/gen"]