diff --git a/.github/release-please-manifest.json b/.github/release-please-manifest.json
index f7b9cee12..96cf93089 100644
--- a/.github/release-please-manifest.json
+++ b/.github/release-please-manifest.json
@@ -1,5 +1,5 @@
 {
-  "packages/synapse-sdk": "0.40.3",
+  "packages/synapse-sdk": "0.40.4",
   "packages/synapse-core": "0.4.1",
   "packages/synapse-react": "0.2.3"
 }
diff --git a/packages/synapse-sdk/CHANGELOG.md b/packages/synapse-sdk/CHANGELOG.md
index b64f974a2..6914067b8 100644
--- a/packages/synapse-sdk/CHANGELOG.md
+++ b/packages/synapse-sdk/CHANGELOG.md
@@ -1,5 +1,26 @@
 # Changelog
 
+## [0.40.4](https://github.com/FilOzone/synapse-sdk/compare/synapse-sdk-v0.40.3...synapse-sdk-v0.40.4) (2026-04-20)
+
+
+### Features
+
+* **synapse-sdk:** expose paginated client dataset queries in WarmStorageService ([#717](https://github.com/FilOzone/synapse-sdk/issues/717)) ([0add8e0](https://github.com/FilOzone/synapse-sdk/commit/0add8e0df0b26c71296b695b953a9f05698b1a43))
+* use PDPVerifier.findPieceIdsByCid for efficient CID→ID lookups ([#718](https://github.com/FilOzone/synapse-sdk/issues/718)) ([3ac48a9](https://github.com/FilOzone/synapse-sdk/commit/3ac48a93d1f1cdae4dd1498a5d90d7ebff0e4c4c))
+
+
+### Bug Fixes
+
+* capture error cause in serialisation ([#727](https://github.com/FilOzone/synapse-sdk/issues/727)) ([d0f3372](https://github.com/FilOzone/synapse-sdk/commit/d0f3372d1e998f2a714feb1dc8508a85b9d78897))
+* fix out of gas problems with `getClientDataSets` ([#734](https://github.com/FilOzone/synapse-sdk/issues/734)) ([c49c18e](https://github.com/FilOzone/synapse-sdk/commit/c49c18e9dcd1fc2ec8fb42cb11eb12b5eb01827e))
+* normalize empty outputs for pdp-verifier ([#723](https://github.com/FilOzone/synapse-sdk/issues/723)) ([187e8a4](https://github.com/FilOzone/synapse-sdk/commit/187e8a4152719c485f2d6f09e3f6c770752a78c3))
+* remove custom fetch for pulled POSTs ([#732](https://github.com/FilOzone/synapse-sdk/issues/732)) ([9b63e7e](https://github.com/FilOzone/synapse-sdk/commit/9b63e7eb4bdae6c41474c94d64614735137cadaf))
+
+
+### Chores
+
+* update msw package version to 2.12.14 in workspace and mock service worker files ([4865ff7](https://github.com/FilOzone/synapse-sdk/commit/4865ff79d229ed29987c4b7fe27367f4aadddfcb))
+
 ## [0.40.3](https://github.com/FilOzone/synapse-sdk/compare/synapse-sdk-v0.40.2...synapse-sdk-v0.40.3) (2026-04-02)
 
 
diff --git a/packages/synapse-sdk/package.json b/packages/synapse-sdk/package.json
index 12f652bb9..d984c5fa8 100644
--- a/packages/synapse-sdk/package.json
+++ b/packages/synapse-sdk/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@filoz/synapse-sdk",
-  "version": "0.40.3",
+  "version": "0.40.4",
   "description": "JavaScript SDK for Filecoin Onchain Cloud",
   "repository": {
     "type": "git",