diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 468c50524..7c112d007 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "8.0.0-beta.4"
+  ".": "8.0.0-beta.5"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 36532e893..d25c62237 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+## [8.0.0-beta.5](https://github.com/adcontextprotocol/adcp-client-python/compare/v8.0.0-beta.4...v8.0.0-beta.5) (2026-08-19)
+
+
+### Features
+
+* **protocol:** support AdCP 3.2.0 beta.3 ([#1053](https://github.com/adcontextprotocol/adcp-client-python/issues/1053)) ([c9870e7](https://github.com/adcontextprotocol/adcp-client-python/commit/c9870e70c7c63bfb1a445dd3771c0cf512cff9ac))
+* **sdk:** add version-pinned server and model surfaces ([#1048](https://github.com/adcontextprotocol/adcp-client-python/issues/1048)) ([c044aba](https://github.com/adcontextprotocol/adcp-client-python/commit/c044abae204e7be737adfb8fc005257fd814508c))
+* **substitution:** translate universal macros ([#1052](https://github.com/adcontextprotocol/adcp-client-python/issues/1052)) ([bd8d640](https://github.com/adcontextprotocol/adcp-client-python/commit/bd8d640f0af31f1dea8a368966465da2715992bd))
+* **types:** provide version-scoped Pydantic extension base ([eb64dc2](https://github.com/adcontextprotocol/adcp-client-python/commit/eb64dc298e311aaa8ef7647147063701e495b509)), closes [#1050](https://github.com/adcontextprotocol/adcp-client-python/issues/1050)
+
 ## [8.0.0-beta.4](https://github.com/adcontextprotocol/adcp-client-python/compare/v8.0.0-beta.3...v8.0.0-beta.4) (2026-08-19)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 1b454a2e7..0f6daf533 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "adcp"
-version = "8.0.0b4"
+version = "8.0.0b5"
 description = "Official Python client for the Ad Context Protocol (AdCP)"
 authors = [
     {name = "AdCP Community", email = "maintainers@adcontextprotocol.org"}