diff --git a/CHANGELOG.md b/CHANGELOG.md
index 73b99c6b..f0c89a1c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,15 +6,16 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## Unreleased
 
-### Added
+### 0.25.1 (3rd November, 2023)
 
 * Add support for Python 3.12. (#2854)
+* Add support for httpcore 1.0 (#2885)
 
 ### Fixed
 
 * Raise `ValueError` on `Response.encoding` being set after `Response.text` has been accessed. (#2852)
 
-## 0.25.0 (11th Sep, 2023)
+## 0.25.0 (11th September, 2023)
 
 ### Removed
 
@@ -62,13 +63,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 * The `rfc3986` dependancy has been removed. (#2252)
 
-## 0.23.3 (4th Jan, 2023)
+## 0.23.3 (4th January, 2023)
 
 ### Fixed
 
 * Version 0.23.2 accidentally included stricter type checking on query parameters. This shouldn've have been included in a minor version bump, and is now reverted. (#2523, #2539)
 
-## 0.23.2 (2nd Jan, 2023)
+## 0.23.2 (2nd January, 2023)
 
 ### Added
 
@@ -80,7 +81,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 * Raise `TypeError` if content is passed a dict-instance. (#2495)
 * Partially revert the API breaking change in 0.23.1, which removed `RawURL`. We continue to expose a `url.raw` property which is now a plain named-tuple. This API is still expected to be deprecated, but we will do so with a major version bump. (#2481)
 
-## 0.23.1 (18th Nov, 2022)
+## 0.23.1 (18th November, 2022)
 
 **Note**: The 0.23.1 release should have used a proper version bump, rather than a minor point release.
 There are API surface area changes that may affect some users.
diff --git a/httpx/__version__.py b/httpx/__version__.py
index bfa421ad..9f92ef99 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__ = "0.25.0"
+__version__ = "0.25.1"
diff --git a/httpx/_transports/default.py b/httpx/_transports/default.py
index 7dba5b82..76c543ce 100644
--- a/httpx/_transports/default.py
+++ b/httpx/_transports/default.py
@@ -64,7 +64,7 @@ SOCKET_OPTION = typing.Union[
 def map_httpcore_exceptions() -> typing.Iterator[None]:
     try:
         yield
-    except Exception as exc:  # noqa: PIE-786
+    except Exception as exc:
         mapped_exc = None
 
         for from_exc, to_exc in HTTPCORE_EXC_MAP.items():
diff --git a/pyproject.toml b/pyproject.toml
index baa92e9a..75c5e7d9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,8 @@ classifiers = [
 ]
 dependencies = [
     "certifi",
-    "httpcore>=0.18.0,<0.19.0",
+    "httpcore",
+    "anyio",
     "idna",
     "sniffio",
 ]
@@ -95,7 +96,10 @@ replacement = 'src="https://raw.githubusercontent.com/encode/httpx/master/\1"'
 [tool.ruff]
 select = ["E", "F", "I", "B", "PIE"]
 ignore = ["B904", "B028"]
-line-length = 120
+line-length = 88
+
+[tool.ruff.pycodestyle]
+max-line-length = 120
 
 [tool.ruff.isort]
 combine-as-imports = true
diff --git a/requirements.txt b/requirements.txt
index e3217ab0..e859bfc6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,21 +12,20 @@ types-chardet==5.0.4.5
 # Documentation
 mkdocs==1.5.3
 mkautodoc==0.2.0
-mkdocs-material==9.4.2
+mkdocs-material==9.4.7
 
 # Packaging
-build==0.10.0
+build==1.0.3
 twine==4.0.2
 
 # Tests & Linting
-black==23.9.1
 coverage[toml]==7.3.0
 cryptography==41.0.4
 mypy==1.5.1
 types-certifi==2021.10.8.2
-pytest==7.4.2
-ruff==0.0.291
+pytest==7.4.3
+ruff==0.1.3
 trio==0.22.2
-trio-typing==0.8.0
+trio-typing==0.9.0
 trustme==1.1.0
 uvicorn==0.22.0
diff --git a/scripts/check b/scripts/check
index ef7b064f..a4bce094 100755
--- a/scripts/check
+++ b/scripts/check
@@ -9,6 +9,6 @@ export SOURCE_FILES="httpx tests"
 set -x
 
 ./scripts/sync-version
-${PREFIX}black --check --diff $SOURCE_FILES
+${PREFIX}ruff format $SOURCE_FILES --diff
 ${PREFIX}mypy $SOURCE_FILES
 ${PREFIX}ruff check $SOURCE_FILES
diff --git a/scripts/lint b/scripts/lint
index 22d12cba..3d8685a0 100755
--- a/scripts/lint
+++ b/scripts/lint
@@ -9,4 +9,4 @@ export SOURCE_FILES="httpx tests"
 set -x
 
 ${PREFIX}ruff --fix $SOURCE_FILES
-${PREFIX}black $SOURCE_FILES
+${PREFIX}ruff format $SOURCE_FILES