diff --git a/python/README.md b/python/README.md
index 3fc1300d..5448ae04 100644
--- a/python/README.md
+++ b/python/README.md
@@ -217,5 +217,5 @@ Note: `assistant.message` and `assistant.reasoning` (final events) are always se
 
 ## Requirements
 
-- Python 3.8+
+- Python 3.9+
 - GitHub Copilot CLI installed and accessible
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 50a2c777..3a724120 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -7,7 +7,7 @@ name = "github-copilot-sdk"
 version = "0.1.0"
 description = "Python SDK for GitHub Copilot CLI"
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 license = {text = "MIT"}
 authors = [
     {name = "GitHub", email = "opensource@github.com"}
@@ -17,7 +17,6 @@ classifiers = [
     "Intended Audience :: Developers",
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -49,7 +48,7 @@ dev = [
 
 [tool.ruff]
 line-length = 100
-target-version = "py38"
+target-version = "py39"
 exclude = [
     "generated",
     "copilot/generated",