diff --git a/instrumentation-genai/opentelemetry-instrumentation-vertexai/CHANGELOG.md b/instrumentation-genai/opentelemetry-instrumentation-vertexai/CHANGELOG.md
index db124d4867..1e0314e138 100644
--- a/instrumentation-genai/opentelemetry-instrumentation-vertexai/CHANGELOG.md
+++ b/instrumentation-genai/opentelemetry-instrumentation-vertexai/CHANGELOG.md
@@ -5,7 +5,7 @@ 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/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased
+## Version 2.1b0 (2025-10-16)
 
 - Update instrumentation to use the latest semantic convention changes made in https://github.com/open-telemetry/semantic-conventions/pull/2179.
 Now only a single event and span (`gen_ai.client.inference.operation.details`) are used to capture prompt and response content. These changes are opt-in,
diff --git a/instrumentation-genai/opentelemetry-instrumentation-vertexai/src/opentelemetry/instrumentation/vertexai/version.py b/instrumentation-genai/opentelemetry-instrumentation-vertexai/src/opentelemetry/instrumentation/vertexai/version.py
index 5b77207d9d..18e86f7a42 100644
--- a/instrumentation-genai/opentelemetry-instrumentation-vertexai/src/opentelemetry/instrumentation/vertexai/version.py
+++ b/instrumentation-genai/opentelemetry-instrumentation-vertexai/src/opentelemetry/instrumentation/vertexai/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "2.1b0.dev"
+__version__ = "2.1b0"