diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6a3d8db..0750689 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.10.0] - 2026-09-29
+
 ### Added
 
 - **`list_sbir_topics(cycle_name=...)`** filters topics by their DSIP solicitation cycle (e.g. `DOD_SBIR_2026_P1_CBZ`), and `SbirTopic` gains a `cycle_name` field (Tango API 5.3.1). The vendored API contract is refreshed to 5.3.1.
diff --git a/pyproject.toml b/pyproject.toml
index c675e80..ad6f314 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "tango-python"
-version = "1.9.0"
+version = "1.10.0"
 description = "Python SDK for the Tango API"
 readme = "README.md"
 requires-python = ">=3.12"
diff --git a/tango/__init__.py b/tango/__init__.py
index 1212796..62d5f6a 100644
--- a/tango/__init__.py
+++ b/tango/__init__.py
@@ -59,7 +59,7 @@
 )
 from .webhooks.receiver import Delivery, WebhookReceiver
 
-__version__ = "1.9.0"
+__version__ = "1.10.0"
 __all__ = [
     "TangoClient",
     "TangoAPIError",
diff --git a/uv.lock b/uv.lock
index cde6ddc..e055cf8 100644
--- a/uv.lock
+++ b/uv.lock
@@ -515,7 +515,7 @@ wheels = [
 
 [[package]]
 name = "tango-python"
-version = "1.9.0"
+version = "1.10.0"
 source = { editable = "." }
 dependencies = [
     { name = "httpx" },