diff --git a/CHANGELOG.md b/CHANGELOG.md
index 366e755..7230fb6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,25 @@
 # fusionAIze Gate Changelog
 
+## v1.20.0 - 2026-04-02
+
+### Added
+
+- External metadata integration: promotion alerts, source badges, provider-mix analytics endpoint (Issue #186)
+- Route explainability dashboard and metrics: route_summary column, decision history panel, why_selected and alternatives display (Issue #188)
+- Added `/api/analytics/provider-mix` endpoint for comparing providers based on external catalog pricing
+- Enhanced dashboard Routes view with "Route decision history" table showing routing explanations
+- Added `route_summary` field to metrics DB and `/api/traces` endpoint
+
+### Changed
+
+- Updated config.yaml metrics db_path default to `./faigate.db` and enabled metrics by default
+- Extended `_build_route_summary` function to populate why_selected and alternatives
+- Updated all six `log_request` calls to include route_summary
+
+### Fixed
+
+- No breaking changes; existing routing behavior remains compatible
+
 ## v1.17.0 - 2026-04-01
 
 ### Added
diff --git a/faigate/__init__.py b/faigate/__init__.py
index c407ee9..4793e39 100644
--- a/faigate/__init__.py
+++ b/faigate/__init__.py
@@ -1,3 +1,3 @@
 """fusionAIze Gate package."""
 
-__version__ = "1.18.0"
+__version__ = "1.20.0"
diff --git a/pyproject.toml b/pyproject.toml
index e300b25..37716f3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "faigate"
-version = "1.18.0"
+version = "1.20.0"
 description = "Local OpenAI-compatible routing gateway for OpenClaw and other AI-native clients."
 readme = "README.md"
 license = "Apache-2.0"