diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index dd8fde7..0d1bebe 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.5.0"
+  ".": "1.6.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fde57ae..00e44c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## [1.6.0](https://github.com/adcontextprotocol/adcp-client-python/compare/v1.5.0...v1.6.0) (2025-11-13)
+
+
+### Features
+
+* add adagents.json validation and discovery ([#42](https://github.com/adcontextprotocol/adcp-client-python/issues/42)) ([4ea16a1](https://github.com/adcontextprotocol/adcp-client-python/commit/4ea16a141a52aa1996420b9d8042d3f8d9d8ddd6))
+* add AdCPBaseModel with exclude_none serialization ([#40](https://github.com/adcontextprotocol/adcp-client-python/issues/40)) ([c3cd590](https://github.com/adcontextprotocol/adcp-client-python/commit/c3cd5902d1ea9ad62e3e61b6e843b64e768feead))
+
 ## [1.5.0](https://github.com/adcontextprotocol/adcp-client-python/compare/v1.4.1...v1.5.0) (2025-11-13)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index d6a7109..63ccac6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "adcp"
-version = "1.5.0"
+version = "1.6.0"
 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 3d90bd8..1f90dec 100644
--- a/src/adcp/__init__.py
+++ b/src/adcp/__init__.py
@@ -163,7 +163,7 @@
     TaskStatus as GeneratedTaskStatus,
 )
 
-__version__ = "1.5.0"
+__version__ = "1.6.0"
 
 __all__ = [
     # Client classes