diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 20e1f11f..f81bf992 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.30.1"
+  ".": "0.31.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c979562b..35b05ce0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,29 @@
 # Changelog
 
+## 0.31.0 (2024-07-09)
+
+Full Changelog: [v0.30.1...v0.31.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.30.1...v0.31.0)
+
+### Features
+
+* **vertex:** add copy and with_options ([#578](https://github.com/anthropics/anthropic-sdk-python/issues/578)) ([fcd425f](https://github.com/anthropics/anthropic-sdk-python/commit/fcd425f724fee45195118aa218bd5c51fb9abed0))
+
+
+### Bug Fixes
+
+* **client:** always respect content-type multipart/form-data if provided ([#574](https://github.com/anthropics/anthropic-sdk-python/issues/574)) ([6051763](https://github.com/anthropics/anthropic-sdk-python/commit/6051763d886aa7107389d8b8aeacf74d296eed3d))
+* **streaming/messages:** more robust event type construction ([#576](https://github.com/anthropics/anthropic-sdk-python/issues/576)) ([98e2075](https://github.com/anthropics/anthropic-sdk-python/commit/98e2075869d816cd85af1a0588bd27719eff02a4))
+* Updated doc typo ([17be06b](https://github.com/anthropics/anthropic-sdk-python/commit/17be06bf3e39eff9de588d99cd59fa509c5ee6a6))
+* **vertex:** avoid credentials refresh on every request ([#575](https://github.com/anthropics/anthropic-sdk-python/issues/575)) ([37bd433](https://github.com/anthropics/anthropic-sdk-python/commit/37bd4337828f3efa14b194fa3025638229129416))
+
+
+### Chores
+
+* **ci:** update rye to v0.35.0 ([#577](https://github.com/anthropics/anthropic-sdk-python/issues/577)) ([e271d69](https://github.com/anthropics/anthropic-sdk-python/commit/e271d694babfb4bcb506064aa353ee29a8394c1d))
+* **internal:** add helper method for constructing `BaseModel`s ([#572](https://github.com/anthropics/anthropic-sdk-python/issues/572)) ([8e626ac](https://github.com/anthropics/anthropic-sdk-python/commit/8e626ac7c88bab413bc1e2d83b7556aa4a44fb63))
+* **internal:** fix formatting ([a912917](https://github.com/anthropics/anthropic-sdk-python/commit/a912917686d6e4a46d192abf002ac69357b1d955))
+* **internal:** minor request options handling changes ([#580](https://github.com/anthropics/anthropic-sdk-python/issues/580)) ([d1dcf42](https://github.com/anthropics/anthropic-sdk-python/commit/d1dcf427ea78f57dd267d891c276b03d4010de78))
+
 ## 0.30.1 (2024-07-01)
 
 Full Changelog: [v0.30.0...v0.30.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.30.0...v0.30.1)
diff --git a/pyproject.toml b/pyproject.toml
index 3824bfca..491cbfc5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "anthropic"
-version = "0.30.1"
+version = "0.31.0"
 description = "The official Python library for the anthropic API"
 dynamic = ["readme"]
 license = "MIT"
diff --git a/src/anthropic/_version.py b/src/anthropic/_version.py
index 63778ab3..bb4a1435 100644
--- a/src/anthropic/_version.py
+++ b/src/anthropic/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "anthropic"
-__version__ = "0.30.1"  # x-release-please-version
+__version__ = "0.31.0"  # x-release-please-version