diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index c3f1463..41ea87d 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.2.0"
+  ".": "1.2.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 23e657d..4c333a0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.2.1](https://github.com/adcontextprotocol/adcp-client-python/compare/v1.2.0...v1.2.1) (2025-11-09)
+
+
+### Documentation
+
+* add Python version requirement note to README ([#25](https://github.com/adcontextprotocol/adcp-client-python/issues/25)) ([b2e5233](https://github.com/adcontextprotocol/adcp-client-python/commit/b2e5233a482d48251df875e77a70523972bfc988))
+
 ## [1.2.0](https://github.com/adcontextprotocol/adcp-client-python/compare/v1.1.0...v1.2.0) (2025-11-08)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 7e9bf55..c2e4c42 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "adcp"
-version = "2.0.0"
+version = "1.2.1"
 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 f3896ce..7cd15d1 100644
--- a/src/adcp/__init__.py
+++ b/src/adcp/__init__.py
@@ -133,7 +133,7 @@
     TaskStatus as GeneratedTaskStatus,
 )
 
-__version__ = "2.0.0"
+__version__ = "1.2.1"
 
 __all__ = [
     # Client classes