diff --git a/CHANGELOG.md b/CHANGELOG.md
index a725396..e2f8a3e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,75 @@
 ### Fixes
 
 
+## v0.4.0 (2026-07-31)
+
+### Changes
+
+- feat(durable-functions): restore worker-side callHttp ([#333](https://github.com/microsoft/durabletask-js/pull/333), fixes [#318](https://github.com/microsoft/durabletask-js/issues/318))
+- [copilot-finds] Bug: Entity getState() produces unhelpful SyntaxError for corrupted state ([#309](https://github.com/microsoft/durabletask-js/pull/309))
+- fix: prevent infinite loop in suspend/resume event buffer iteration ([#306](https://github.com/microsoft/durabletask-js/pull/306))
+- fix: clear stale in-memory purge queue entries ([#285](https://github.com/microsoft/durabletask-js/pull/285))
+- fix: preserve error cause chains in failure details ([#310](https://github.com/microsoft/durabletask-js/pull/310))
+- fix: treat empty entity operation input as no input ([#283](https://github.com/microsoft/durabletask-js/pull/283))
+- fix: use getValue() instead of toString() on protobuf StringValue in activity execution ([#280](https://github.com/microsoft/durabletask-js/pull/280))
+- fix: clean up orchestration history streams ([#314](https://github.com/microsoft/durabletask-js/pull/314))
+- fix: make raiseIfFailed honor failed runtime status ([#308](https://github.com/microsoft/durabletask-js/pull/308))
+- fix: prevent test worker crash during completion error handling ([#305](https://github.com/microsoft/durabletask-js/pull/305))
+- Add `durable-functions@4.0.0` — Azure Functions Durable provider on the gRPC core (+ core host helpers, E2E CI, and release pipeline) ([#282](https://github.com/microsoft/durabletask-js/pull/282))
+- fix: use failure details for failed orchestration span messages ([#290](https://github.com/microsoft/durabletask-js/pull/290))
+- Fix #301: WhenAll wait-all + aggregate-exception semantics (root cause of rewind deadlock) ([#302](https://github.com/microsoft/durabletask-js/pull/302))
+- Add rewind support ([#296](https://github.com/microsoft/durabletask-js/pull/296))
+- Fix #292: align core Task/TimerTask public shape (result/isCompleted/isFaulted, cancellable TimerTask) ([#293](https://github.com/microsoft/durabletask-js/pull/293))
+- test: add missing RetryableTask coverage for non-retriable, remaining-timeout, and complete() override ([#289](https://github.com/microsoft/durabletask-js/pull/289))
+- Fix #291: accept EVENTSENT/EVENTRAISED confirmation for entity calls on classic (Azure Storage) backend ([#294](https://github.com/microsoft/durabletask-js/pull/294))
+- fix: normalize entity query prefix in client.getEntities() ([#286](https://github.com/microsoft/durabletask-js/pull/286))
+- fix: validate invalid createTimer inputs ([#288](https://github.com/microsoft/durabletask-js/pull/288))
+- fix: preserve EntityOperationFailedException details ([#277](https://github.com/microsoft/durabletask-js/pull/277))
+- fix: exclude initializeState from TaskEntity method dispatch ([#278](https://github.com/microsoft/durabletask-js/pull/278))
+- fix: preserve V2 entity operation info for index zero ([#279](https://github.com/microsoft/durabletask-js/pull/279))
+- Add input validation for empty event names in waitForExternalEvent() and sendEvent() ([#276](https://github.com/microsoft/durabletask-js/pull/276))
+- fix: reject non-finite retry policy values ([#274](https://github.com/microsoft/durabletask-js/pull/274))
+- fix: use ordinal string comparison for deterministic ordering ([#273](https://github.com/microsoft/durabletask-js/pull/273))
+- test: add Task and CompletableTask coverage ([#272](https://github.com/microsoft/durabletask-js/pull/272))
+- fix: add missing action types to non-determinism method names ([#271](https://github.com/microsoft/durabletask-js/pull/271))
+- fix: preserve continue-as-new carryover event ordering ([#269](https://github.com/microsoft/durabletask-js/pull/269))
+- Fix: Handle EntityUnlockSent events in orchestration executor replay ([#268](https://github.com/microsoft/durabletask-js/pull/268))
+- fix: Update instance status on suspend/resume in InMemoryOrchestrationBackend ([#176](https://github.com/microsoft/durabletask-js/pull/176))
+- fix: prevent duplicate completion actions when setFailed() is called after setComplete() ([#267](https://github.com/microsoft/durabletask-js/pull/267))
+- fix: use epoch fallback for entity lastModifiedTime ([#265](https://github.com/microsoft/durabletask-js/pull/265))
+- fix: handle EventSent replay events ([#264](https://github.com/microsoft/durabletask-js/pull/264))
+- fix: propagate parent instance info in in-memory backend ([#263](https://github.com/microsoft/durabletask-js/pull/263))
+- fix: avoid wildcard names for anonymous generator functions ([#262](https://github.com/microsoft/durabletask-js/pull/262))
+- fix: use epoch fallback for missing orchestration timestamps ([#261](https://github.com/microsoft/durabletask-js/pull/261))
+- fix: add UNKNOWN fallback in getNewEventSummary for unrecognized event types ([#260](https://github.com/microsoft/durabletask-js/pull/260))
+- [copilot-finds] Improve: withTimeout() input validation and remove dead sleepWithAbort ([#258](https://github.com/microsoft/durabletask-js/pull/258))
+- fix: prevent unhandled rejections in worker execution wrappers ([#257](https://github.com/microsoft/durabletask-js/pull/257))
+- build(deps): bump @grpc/grpc-js ([#259](https://github.com/microsoft/durabletask-js/pull/259))
+- fix: use toLowerCase() instead of toLocaleLowerCase() for event name matching ([#180](https://github.com/microsoft/durabletask-js/pull/180))
+- fix: track entity execution in pendingWorkItems for graceful shutdown ([#179](https://github.com/microsoft/durabletask-js/pull/179))
+- fix: move activity input JSON.parse inside try-catch for proper error handling ([#181](https://github.com/microsoft/durabletask-js/pull/181))
+- fix: Validate first yielded value in orchestrator run() method ([#164](https://github.com/microsoft/durabletask-js/pull/164))
+- fix: Sub-orchestration watcher uses unintended 30s default timeout in InMemoryOrchestrationBackend ([#156](https://github.com/microsoft/durabletask-js/pull/156))
+- fix: serialize custom status eagerly to prevent executor crash ([#195](https://github.com/microsoft/durabletask-js/pull/195))
+- fix: cancel pending timers when purging orchestration instances ([#197](https://github.com/microsoft/durabletask-js/pull/197))
+- [copilot-finds] Bug: Fix TestOrchestrationClient null serialization divergence from real client ([#199](https://github.com/microsoft/durabletask-js/pull/199))
+- [copilot-finds] Bug: newOrchestrationState drops failure details when error message or type is empty string ([#198](https://github.com/microsoft/durabletask-js/pull/198))
+- fix: Preserve original gRPC error cause in rewindInstance and restartOrchestration ([#200](https://github.com/microsoft/durabletask-js/pull/200))
+- fix: Catch exceptions from user-provided retry handlers to prevent orchestration crash ([#193](https://github.com/microsoft/durabletask-js/pull/193))
+- feat: Implement work item filters ([#168](https://github.com/microsoft/durabletask-js/pull/168))
+- fix: Add guard clause to handleSubOrchestrationCompleted to prevent unconditional resume ([#183](https://github.com/microsoft/durabletask-js/pull/183))
+- fix: Add stream cleanup and retry logic to gRPC error handler ([#182](https://github.com/microsoft/durabletask-js/pull/182))
+- fix: Use strict undefined check for taskId in completion event handlers ([#157](https://github.com/microsoft/durabletask-js/pull/157))
+- Add comprehensive unit tests for WhenAnyTask ([#162](https://github.com/microsoft/durabletask-js/pull/162))
+- fix: Add missing non-Task validation in generator failure recovery path ([#163](https://github.com/microsoft/durabletask-js/pull/163))
+- fix: Entity StateShim.setState() corrupts cache on serialization failure ([#151](https://github.com/microsoft/durabletask-js/pull/151))
+- fix: clear customStatus on continue-as-new in InMemoryOrchestrationBackend ([#155](https://github.com/microsoft/durabletask-js/pull/155))
+- fix: propagate parent notification from composite tasks (WhenAllTask/WhenAnyTask) ([#150](https://github.com/microsoft/durabletask-js/pull/150))
+- fix: use deterministic time in createTimer instead of Date.now() ([#146](https://github.com/microsoft/durabletask-js/pull/146))
+- Fix WhenAllTask constructor resetting _completedTasks counter ([#143](https://github.com/microsoft/durabletask-js/pull/143))
+- Fix retry handler treating undefined/null/NaN/Infinity as retry signal ([#142](https://github.com/microsoft/durabletask-js/pull/142))
+- Release v0.3.0 ([#147](https://github.com/microsoft/durabletask-js/pull/147))
+
 ## v0.3.0 (2026-03-06)
 
 ### Changes