diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 6110c0f0..9dc6cef9 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "3.3.0"
+  ".": "3.4.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2c62299b..636d87ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [3.4.0](https://github.com/adcontextprotocol/adcp-client-python/compare/v3.3.0...v3.4.0) (2026-02-13)
+
+
+### Features
+
+* add brand and property registry lookup methods ([#130](https://github.com/adcontextprotocol/adcp-client-python/issues/130)) ([9bfb0fb](https://github.com/adcontextprotocol/adcp-client-python/commit/9bfb0fb2f02890883ccdb0e052a6bf3c4ae86317)), closes [#129](https://github.com/adcontextprotocol/adcp-client-python/issues/129)
+
 ## [3.3.0](https://github.com/adcontextprotocol/adcp-client-python/compare/v3.2.0...v3.3.0) (2026-02-12)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 0ea7086c..1f0f5e66 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "adcp"
-version = "3.3.0"
+version = "3.4.0"
 description = "Official Python client for the Ad Context Protocol (AdCP)"
 authors = [
     {name = "AdCP Community", email = "maintainers@adcontextprotocol.org"}
diff --git a/src/adcp/__init__.py b/src/adcp/__init__.py
index 0d4cc113..d01d3bd6 100644
--- a/src/adcp/__init__.py
+++ b/src/adcp/__init__.py
@@ -239,7 +239,7 @@
     get_adcp_signed_headers_for_webhook,
 )
 
-__version__ = "3.3.0"
+__version__ = "3.4.0"
 
 
 def get_adcp_version() -> str: