diff --git a/CHANGELOG.md b/CHANGELOG.md
index 15d93ac8f..435389597 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,37 @@
 # Changelog
 
+## [3.0.0](https://github.com/googleapis/python-genai/compare/v2.34.0...v3.0.0) (2026-11-05)
+
+
+### ⚠ BREAKING CHANGES
+
+* **interactions:** In the typed SDKs, `CodeExecutionResultStep.result` changes from `string` to the `CodeExecutionResultStepResult` union. Code that reads `result` as a string must now check which variant is present and read the string from it. The JSON for text-only results is unchanged.
+* default Gemini API version to v1 instead of v1beta across SDKs
+* `httpx2` is now the required dependency and default HTTP client instead of `httpx`, and default SSL verification with `httpx2` uses the OS certificate trust store (via `truststore` / `httpx2.create_ssl_context()`) when `SSL_CERT_FILE` and `SSL_CERT_DIR` are not set. To maintain baseline behavior, install `google-genai[httpx]` and set `GOOGLE_GENAI_HTTP_CLIENT=httpx`.
+
+### Features
+
+* Add `source_text` to `AudioTranscriptionConfig` and `SmartTranscriptionMode`. ([1ac3c91](https://github.com/googleapis/python-genai/commit/1ac3c915d1b1eae5323f2cfed1676ef2cec2c897))
+* **cli:** Use gemini-3.5-transcribe as default model for transcribe command ([b18fd3c](https://github.com/googleapis/python-genai/commit/b18fd3cbe8696588ba8c78c79802707c09708fd6))
+* Default Gemini API version to v1 instead of v1beta across SDKs ([2d0f947](https://github.com/googleapis/python-genai/commit/2d0f9476ae5c7a6d3c90f81b056fad0315be5b60))
+* Disable GenerateVideos for Gemini API, update tests/READMEs ([8ddc655](https://github.com/googleapis/python-genai/commit/8ddc655c5ed5395e1dc976a670d7a054e6245689))
+* **interactions:** Add Office and OpenDocument MIME types ([753cc1c](https://github.com/googleapis/python-genai/commit/753cc1c2a67ea33b2629a9c6f2a8e04af4d1d1e1))
+* **interactions:** Support multimodal content in CodeExecutionResultStep.result ([a216d95](https://github.com/googleapis/python-genai/commit/a216d95cc708ebcf8185e2ed9304f97ae809d1f7))
+* Support GOOGLE_GENAI_API_VERSION environment variable across SDKs ([2d0f947](https://github.com/googleapis/python-genai/commit/2d0f9476ae5c7a6d3c90f81b056fad0315be5b60))
+* Switch default HTTP client to httpx2 and use OS trust store by default ([51285c8](https://github.com/googleapis/python-genai/commit/51285c87a4394d3e895df07af7664df5cd1c30de))
+* Update discovery doc ([5647e1e](https://github.com/googleapis/python-genai/commit/5647e1e3678dd5a877c4a709cff8288357988c10))
+
+
+### Bug Fixes
+
+* Preserve unknown fields and open-union variants in Interactions models ([2eaf2d8](https://github.com/googleapis/python-genai/commit/2eaf2d84e6cc3714eb5b5669fc26a2a1f5edf6c9))
+* Respect configured and default API version for Gemini API file uploads across SDKs ([ddc45d0](https://github.com/googleapis/python-genai/commit/ddc45d06dedf182a226ddcfc5c84ada946a2bd37))
+
+
+### Documentation
+
+* Update embedding examples from gemini-embedding-2-preview to gemini-embedding-2 ([d97752a](https://github.com/googleapis/python-genai/commit/d97752a945f409971e707d31f692411d9f1e7c95))
+
 ## [2.34.0](https://github.com/googleapis/python-genai/compare/v2.33.0...v2.34.0) (2026-10-29)
 
 
diff --git a/google/genai/version.py b/google/genai/version.py
index 72f285bf4..929b02b3d 100644
--- a/google/genai/version.py
+++ b/google/genai/version.py
@@ -13,4 +13,4 @@
 # limitations under the License.
 #
 
-__version__ = '2.34.0' # x-release-please-version
+__version__ = '3.0.0' # x-release-please-version
diff --git a/pyproject.toml b/pyproject.toml
index ab378ee62..e7dadc33b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ requires = ["setuptools", "wheel", "twine>=6.1.0", "packaging>=24.2", "pkginfo>=
 
 [project]
 name = "google-genai"
-version = "2.34.0"
+version = "3.0.0"
 description = "GenAI Python SDK"
 readme = "README.md"
 license = "Apache-2.0"