diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index bc17614..16502c3 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1 +1 @@
-{".":"3.3.0"}
+{".":"4.0.0"}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index bd068cb..8429a7c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [4.0.0](https://github.com/flowcore-io/flowcore-sdk/compare/v3.3.0...v4.0.0) (2026-04-23)
+
+
+### ⚠ BREAKING CHANGES
+
+* **data-pathways:** the metrics throughput shape renames endpoints[url].flowTypes → endpoints[url].sources keyed by sourceId. Consumers reading the pathway metrics endpoint or sending heartbeats must adopt the new shape. Data-pathways v3.0.0 only accepts the new shape.
+
+### Features
+
+* **data-pathways:** id-keyed pump-state commands + sources metrics shape ([#217](https://github.com/flowcore-io/flowcore-sdk/issues/217)) ([3111706](https://github.com/flowcore-io/flowcore-sdk/commit/31117068dd049840bfb3bf7c2d63d67b36474fb5))
+
 ## [3.3.0](https://github.com/flowcore-io/flowcore-sdk/compare/v3.2.0...v3.3.0) (2026-04-23)
 
 
diff --git a/deno.json b/deno.json
index 4346205..3979ca0 100644
--- a/deno.json
+++ b/deno.json
@@ -2,7 +2,7 @@
   "$schema": "https://deno.land/x/deno/cli/schemas/config-file.v1.json",
   "name": "@flowcore/sdk",
   "description": "Flowcore SDK",
-  "version": "3.3.0",
+  "version": "4.0.0",
   "license": "MIT",
   "exports": "./src/mod.ts",
   "publish": {