diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 218393f..f1c1e58 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.4.1"
+  ".": "0.5.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5cd2180..73fcacf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.5.0](https://github.com/glassflow/glassflow-python/compare/v0.4.1...v0.5.0) (2026-07-15)
+
+
+### Features
+
+* record time-to-first-token on streaming generations ([#29](https://github.com/glassflow/glassflow-python/issues/29)) ([6c1ecaa](https://github.com/glassflow/glassflow-python/commit/6c1ecaa46c7086b2bbdccc5a4d4dd7ade036c3c7))
+
 ## [0.4.1](https://github.com/glassflow/glassflow-python/compare/v0.4.0...v0.4.1) (2026-07-09)
 
 
diff --git a/src/glassflow/__init__.py b/src/glassflow/__init__.py
index 77b0f13..6742efe 100644
--- a/src/glassflow/__init__.py
+++ b/src/glassflow/__init__.py
@@ -1,6 +1,6 @@
 """GlassFlow SDK — OpenTelemetry-native tracing for AI agents and LLM apps."""
 
-__version__ = "0.4.1"  # x-release-please-version
+__version__ = "0.5.0"  # x-release-please-version
 
 from .client import GlassflowClient, build_span_exporter, get_tracer, init
 from .config import GlassflowConfig, resolve_config