diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index b7298f876..96f1cd949 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.2.3"
+  ".": "1.3.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6b0cf6332..0231ad547 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,39 @@
 # Changelog
 
+## [1.3.0](https://github.com/a2aproject/a2a-python/compare/v1.2.3...v1.3.0) (2026-10-27)
+
+
+### Features
+
+* **server:** release parked interrupted tasks after a configurable timeout ([#1338](https://github.com/a2aproject/a2a-python/issues/1338)) ([b22a68d](https://github.com/a2aproject/a2a-python/commit/b22a68d242c32edddaa8953d0040ca82897e0b9b))
+
+
+### Bug Fixes
+
+* **client:** Create separate httpx per client when none configured ([#1358](https://github.com/a2aproject/a2a-python/issues/1358)) ([d316d0e](https://github.com/a2aproject/a2a-python/commit/d316d0e85e4d229df261d0cee0e9d9c0e5263207))
+* **client:** raise A2A errors for malformed JSON-RPC responses ([#1375](https://github.com/a2aproject/a2a-python/issues/1375)) ([7e55413](https://github.com/a2aproject/a2a-python/commit/7e554137514b693cc952e6544a9eaf36c7d56643))
+* **client:** rejections from unrecognized fields ([#1354](https://github.com/a2aproject/a2a-python/issues/1354)) ([91929cd](https://github.com/a2aproject/a2a-python/commit/91929cda989caba089584ceafa7796583f25bec4))
+* **compat:** keep an unset v0.3 status message and provider as None ([#1362](https://github.com/a2aproject/a2a-python/issues/1362)) ([cdb4799](https://github.com/a2aproject/a2a-python/commit/cdb479957e81600f68f946f8ff0122667673cb35)), closes [#1361](https://github.com/a2aproject/a2a-python/issues/1361)
+* **compat:** return A2A error codes from the v0.3 JSON-RPC adapter ([#1369](https://github.com/a2aproject/a2a-python/issues/1369)) ([8e32d53](https://github.com/a2aproject/a2a-python/commit/8e32d53173f8924beb7df0d3210e28a9fe9020f9))
+* **compat:** set last_updated when storing a task in v0.3 format ([#1372](https://github.com/a2aproject/a2a-python/issues/1372)) ([30b6d50](https://github.com/a2aproject/a2a-python/commit/30b6d5067a9256447e3d5324163b091fc4bbad74)), closes [#1371](https://github.com/a2aproject/a2a-python/issues/1371)
+* **core:** restore structured __repr__ on A2A exceptions ([#1348](https://github.com/a2aproject/a2a-python/issues/1348)) ([79a6f45](https://github.com/a2aproject/a2a-python/commit/79a6f451f49fdeaec099d723542363b5bc6dead7))
+* **server:** allow recovery after status event validation fails ([#1365](https://github.com/a2aproject/a2a-python/issues/1365)) ([ca3ef0d](https://github.com/a2aproject/a2a-python/commit/ca3ef0d6c63384228db88d4984536a8189831d08))
+* **server:** apply history_length to legacy streaming sends ([#1364](https://github.com/a2aproject/a2a-python/issues/1364)) ([261c074](https://github.com/a2aproject/a2a-python/commit/261c074aa4de522dfa609882666c98c5bd1a52d0))
+* **server:** include legacy task states in database list filters ([#1337](https://github.com/a2aproject/a2a-python/issues/1337)) ([e12d494](https://github.com/a2aproject/a2a-python/commit/e12d494b4136351d5b5d07b5c6beae95a500fc4e))
+* **server:** record executor failures through the event consumer ([#1366](https://github.com/a2aproject/a2a-python/issues/1366)) ([ad85806](https://github.com/a2aproject/a2a-python/commit/ad85806d9e43249eef5e3ad9724b0a5540cf99fb))
+* **server:** reject boolean JSON-RPC request IDs ([#1350](https://github.com/a2aproject/a2a-python/issues/1350)) ([05392b3](https://github.com/a2aproject/a2a-python/commit/05392b373f70fea18349b8c66bfffb669b3b1137))
+* skip malformed agent card signature headers ([#1335](https://github.com/a2aproject/a2a-python/issues/1335)) ([b21a144](https://github.com/a2aproject/a2a-python/commit/b21a1445c8e3a4dcd9edfa1d23e7e6af8382d8b7))
+
+
+### Documentation
+
+* **helpers:** note that whole numbers in a data Part come back as floats ([#1373](https://github.com/a2aproject/a2a-python/issues/1373)) ([654774f](https://github.com/a2aproject/a2a-python/commit/654774f3d43b471e17fc2c6901998c71015ec450))
+
+
+### Miscellaneous Chores
+
+* release 1.3.0 ([#1389](https://github.com/a2aproject/a2a-python/issues/1389)) ([fb6373f](https://github.com/a2aproject/a2a-python/commit/fb6373f2e4bad3c9e6130325dd2ba092749f8998))
+
 ## [1.2.3](https://github.com/a2aproject/a2a-python/compare/v1.2.2...v1.2.3) (2026-10-17)