diff --git a/CHANGELOG.md b/CHANGELOG.md
index 328a67442..10893f07c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,21 @@
 # Changelog
 
+## [2.0.0](https://github.com/googleapis/python-genai/compare/v1.75.0...v2.0.0) (2026-05-07)
+
+
+### ⚠ BREAKING CHANGES - Interactions Only
+
+Note: The breaking changes are only in interactions. `GenerateContent` usage in unaffected.
+Refer to https://ai.google.dev/gemini-api/docs/interactions-breaking-changes-may-2026 for details
+
+* Add steps for interactions ([41d8e5b](https://github.com/googleapis/python-genai/commit/41d8e5b9fc2cfbdf699c4dd9af0d3ec8ffef3eb2))
+* Rename SSE events to interaction.created and interaction.completed ([0549c1c](https://github.com/googleapis/python-genai/commit/0549c1cf01dc3243fda8a684700f402ca5a1a355))
+* Deprecate legacy response_format and publish new polymorphic field. ([7fdc9a1](https://github.com/googleapis/python-genai/commit/7fdc9a1b9b1365aef296cb997edd05983928a256))
+
+### Documentation
+
+* Update docs ([d3020fd](https://github.com/googleapis/python-genai/commit/d3020fdd29430fb1806e9c8a0b86e31d35b2f870))
+
 ## [1.75.0](https://github.com/googleapis/python-genai/compare/v1.74.0...v1.75.0) (2026-05-04)
 
 
diff --git a/google/genai/version.py b/google/genai/version.py
index 88c904d4f..b23175b9b 100644
--- a/google/genai/version.py
+++ b/google/genai/version.py
@@ -13,4 +13,4 @@
 # limitations under the License.
 #
 
-__version__ = '1.75.0' # x-release-please-version
+__version__ = '2.0.0' # x-release-please-version
diff --git a/pyproject.toml b/pyproject.toml
index a4c775190..de8ff0a1a 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 = "1.75.0"
+version = "2.0.0"
 description = "GenAI Python SDK"
 readme = "README.md"
 license = "Apache-2.0"