diff --git a/.github/workflows/test-suite.yml b/.github/workflows/test-suite.yml
index 92e8c36015..77118c42e3 100644
--- a/.github/workflows/test-suite.yml
+++ b/.github/workflows/test-suite.yml
@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
 
     steps:
       - uses: "actions/checkout@v4"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 57fa44b8ef..a3fa798973 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,11 +4,9 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
-## [UNRELEASED]
+## 1.0.0 (Unreleased)
 
-### Removed
-
-* Drop support for Python 3.8
+* Minimum supported Python version is now 3.10
 
 ### Added
 
diff --git a/httpx/__version__.py b/httpx/__version__.py
index 801bfacf67..4cea62865e 100644
--- a/httpx/__version__.py
+++ b/httpx/__version__.py
@@ -1,3 +1,3 @@
 __title__ = "httpx"
 __description__ = "A next generation HTTP client, for Python 3."
-__version__ = "0.28.1"
+__version__ = "1.0.0"
diff --git a/pyproject.toml b/pyproject.toml
index fc3e95ea74..1dea3394f1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ build-backend = "hatchling.build"
 name = "httpx"
 description = "The next generation HTTP client."
 license = "BSD-3-Clause"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 authors = [
     { name = "Tom Christie", email = "tom@tomchristie.com" },
 ]
@@ -20,11 +20,11 @@ classifiers = [
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Topic :: Internet :: WWW/HTTP",
 ]
 dependencies = [
diff --git a/requirements.txt b/requirements.txt
index ebc6ea7fc5..26b4dfabd1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ mkdocs-material==9.6.18
 
 # Packaging
 build==1.3.0
-twine==6.1.0
+twine==7.0.0
 
 # Tests & Linting
 coverage[toml]==7.10.6