diff --git a/CHANGELOG.md b/CHANGELOG.md
index e62f365a..a75bf444 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,80 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
+## [2.0.0](https://www.github.com/lance/sdk-javascript/compare/v1.0.0...v2.0.0) (2021-04-16)
+
+
+### ⚠ BREAKING CHANGES
+
+* change CloudEvent to use direct object notation and get/set properties (#172)
+* refactor HTTP bindings and specifications (#165)
+* expose a version agnostic event emitter (#141)
+* **unmarshaller:** remove asynchronous 0.3 unmarshaller API (#126)
+
+### Features
+
+* add ValidationError type extending TypeError ([#151](https://www.github.com/lance/sdk-javascript/issues/151)) ([09b0c76](https://www.github.com/lance/sdk-javascript/commit/09b0c76826657222f6dc93fa377349a62e9b628f))
+* expose a mode and version agnostic event receiver ([#120](https://www.github.com/lance/sdk-javascript/issues/120)) ([54f242b](https://www.github.com/lance/sdk-javascript/commit/54f242b79e03dbba382f5016a1279ddf392c354f))
+* expose a version agnostic event emitter ([#141](https://www.github.com/lance/sdk-javascript/issues/141)) ([250a0a1](https://www.github.com/lance/sdk-javascript/commit/250a0a144c5fbeac237e04dcd3f54e05dc30fc70))
+* formatter.js es6 ([#87](https://www.github.com/lance/sdk-javascript/issues/87)) ([c36f194](https://www.github.com/lance/sdk-javascript/commit/c36f1949d0176574ace24fee87ce850f01f1e2f5))
+* **unmarshaller:** remove asynchronous 0.3 unmarshaller API ([#126](https://www.github.com/lance/sdk-javascript/issues/126)) ([63ae1ad](https://www.github.com/lance/sdk-javascript/commit/63ae1ad527f0b9652222cbc7e51f7a895410a4b4))
+* use CloudEvents not cloudevents everywhere ([#101](https://www.github.com/lance/sdk-javascript/issues/101)) ([05ecbde](https://www.github.com/lance/sdk-javascript/commit/05ecbdea4f594a6012ba7717f3311d0c20c2985f))
+
+
+### Bug Fixes
+
+* ensure binary events can handle no content-type header ([#134](https://www.github.com/lance/sdk-javascript/issues/134)) ([72a87df](https://www.github.com/lance/sdk-javascript/commit/72a87dfb2d05411f9f58b417bbc7db4233dcbbbf))
+* Fix Express example installation ([#77](https://www.github.com/lance/sdk-javascript/issues/77)) ([bb8e0f9](https://www.github.com/lance/sdk-javascript/commit/bb8e0f9e0ca7aef00103d03f6071a648a9fab76d))
+* make application/json the default content type in binary mode ([#118](https://www.github.com/lance/sdk-javascript/issues/118)) ([d9e9ae6](https://www.github.com/lance/sdk-javascript/commit/d9e9ae6bdcbaf80dc35d486765c9189a176be650))
+* misspelled word ([#113](https://www.github.com/lance/sdk-javascript/issues/113)) ([cd6a3ee](https://www.github.com/lance/sdk-javascript/commit/cd6a3eec7dca4bac1e2ba9fbba9949799e6c97d8))
+* misspelled word ([#115](https://www.github.com/lance/sdk-javascript/issues/115)) ([53524ac](https://www.github.com/lance/sdk-javascript/commit/53524acb0e18598b1376fa4485cdd2a117e892fd))
+* protects the consts from being changed in other parts of the code. ([fbcbcec](https://www.github.com/lance/sdk-javascript/commit/fbcbcec4e885618367c5cb25a8e030549dd829df))
+* remove d.ts types. Fixes [#83](https://www.github.com/lance/sdk-javascript/issues/83) ([#84](https://www.github.com/lance/sdk-javascript/issues/84)) ([6c223e2](https://www.github.com/lance/sdk-javascript/commit/6c223e2c34769fc0b2f2dbc58a398eb85442af92))
+* support mTLS in 1.0 Binary and Structured emitters ([3a063d7](https://www.github.com/lance/sdk-javascript/commit/3a063d72451d1156df8fe9c3499ef1e81e905060))
+* throw "no cloud event detected" if one can't be read ([#139](https://www.github.com/lance/sdk-javascript/issues/139)) ([ef7550d](https://www.github.com/lance/sdk-javascript/commit/ef7550d60d248e1720172c0a18ae5dc21e8da5a1))
+
+
+### Tests
+
+* remove uuid require in spec_03_tests.js ([#145](https://www.github.com/lance/sdk-javascript/issues/145)) ([c56c203](https://www.github.com/lance/sdk-javascript/commit/c56c203d6af7b9bc1be09a82d33fdbe7aea7f331))
+* use constants in spec_03_tests.js ([#144](https://www.github.com/lance/sdk-javascript/issues/144)) ([2882aff](https://www.github.com/lance/sdk-javascript/commit/2882affb382366654b3c7749ed274b9b74f84723))
+* use header constants in receiver tests ([#131](https://www.github.com/lance/sdk-javascript/issues/131)) ([60bf05c](https://www.github.com/lance/sdk-javascript/commit/60bf05c8f2d4275b5432ce544982077d22b4b8ff))
+* use header constants in unmarshaller tests ([#60](https://www.github.com/lance/sdk-javascript/issues/60)) ([e087805](https://www.github.com/lance/sdk-javascript/commit/e0878055a207154eaf040d00f778ad3854a5d7d2))
+
+
+### Miscellaneous
+
+* add action to detect and close stale issues ([5a6cde5](https://www.github.com/lance/sdk-javascript/commit/5a6cde5695049403c7f614c42067511908b54ffc))
+* add eslint configuration and npm script ([3f238a0](https://www.github.com/lance/sdk-javascript/commit/3f238a01248aba54b0208aaaa54b66cf2f54a749))
+* add npm fix command ([#74](https://www.github.com/lance/sdk-javascript/issues/74)) ([005d532](https://www.github.com/lance/sdk-javascript/commit/005d5327e49cd271fe84382d18df7019dc3f73ad))
+* add standard-version and release script ([f47bca4](https://www.github.com/lance/sdk-javascript/commit/f47bca4ff0ca93dc83a927bb9ee4818e317a5e75))
+* adds files section in package.json ([#147](https://www.github.com/lance/sdk-javascript/issues/147)) ([f8a62b2](https://www.github.com/lance/sdk-javascript/commit/f8a62b2843b12fe894201670770a00c034ab701d))
+* es6 base64 parser ([#75](https://www.github.com/lance/sdk-javascript/issues/75)) ([d042ef1](https://www.github.com/lance/sdk-javascript/commit/d042ef1dbb555e2500036716d4170661dc48fe3e))
+* es6 parser ([#98](https://www.github.com/lance/sdk-javascript/issues/98)) ([cd6decd](https://www.github.com/lance/sdk-javascript/commit/cd6decd74904888557bfc53045c87efe630fb88c))
+* es6 unmarshaller ([#108](https://www.github.com/lance/sdk-javascript/issues/108)) ([79ec3ef](https://www.github.com/lance/sdk-javascript/commit/79ec3ef126a46afbd3217dfdb969b00f20e38f56))
+* fix CI code coverage publishing ([#78](https://www.github.com/lance/sdk-javascript/issues/78)) ([8fb0ddf](https://www.github.com/lance/sdk-javascript/commit/8fb0ddf6eb0dd05b0728444f404e1014a9348599))
+* Modify CI to also build backport branch(es) ([#122](https://www.github.com/lance/sdk-javascript/issues/122)) ([c1fda94](https://www.github.com/lance/sdk-javascript/commit/c1fda94d25f84db097e75177b166c3f18f707dda))
+* remove note with bad link and non SDK docs ([#109](https://www.github.com/lance/sdk-javascript/issues/109)) ([f30c814](https://www.github.com/lance/sdk-javascript/commit/f30c814a09896d31f821ebe5eb5ba95cd264d699))
+* update eslint rules to disallow var usage ([e83db29](https://www.github.com/lance/sdk-javascript/commit/e83db297ae5761248d0c34a9d440e6a4285a645d))
+* Update uuid dependency ([42246ce](https://www.github.com/lance/sdk-javascript/commit/42246ce36b9898eea1d5daa5f43ddb13ee6b12d0))
+* use es6 for cloudevents.js ([#73](https://www.github.com/lance/sdk-javascript/issues/73)) ([12ac181](https://www.github.com/lance/sdk-javascript/commit/12ac1813005d1c88e86c6fc9de675516dd3e290c))
+
+
+### Documentation
+
+* add instructions and details to contributors guide ([#105](https://www.github.com/lance/sdk-javascript/issues/105)) ([fd99cb1](https://www.github.com/lance/sdk-javascript/commit/fd99cb1e598bc27f0ec41755745942b0487f6905))
+* add JSDocs for top level API objects ([#140](https://www.github.com/lance/sdk-javascript/issues/140)) ([b283583](https://www.github.com/lance/sdk-javascript/commit/b283583c0c07e6da40fac26a2b8c7dac894468dc))
+* organize README badges and remove TS example ([#112](https://www.github.com/lance/sdk-javascript/issues/112)) ([07323e0](https://www.github.com/lance/sdk-javascript/commit/07323e078fdd60814ed61a65d6756e23cf523400))
+* remove 0.1, 0.2 spec support from README ([56036b0](https://www.github.com/lance/sdk-javascript/commit/56036b09ddfeb00d19678e118ea5f742b88cdfc7))
+* remove repo structure docs ([#111](https://www.github.com/lance/sdk-javascript/issues/111)) ([223a7c6](https://www.github.com/lance/sdk-javascript/commit/223a7c6f03732fa4dc91c0af78adfcc4c026e7c8))
+* update README and examples with new API ([#138](https://www.github.com/lance/sdk-javascript/issues/138)) ([b866edd](https://www.github.com/lance/sdk-javascript/commit/b866edddd9593b5456981f1f5613225b8335ec05))
+
+
+### lib
+
+* change CloudEvent to use direct object notation and get/set properties ([#172](https://www.github.com/lance/sdk-javascript/issues/172)) ([abc114b](https://www.github.com/lance/sdk-javascript/commit/abc114b24e448a33d2a4f583cdc7ae191940bdca))
+* refactor HTTP bindings and specifications ([#165](https://www.github.com/lance/sdk-javascript/issues/165)) ([6f0b5ea](https://www.github.com/lance/sdk-javascript/commit/6f0b5ea5f11ae8a451df2c46208bbd1e08ff7227))
+
 ## [Unreleased]
 
 ### Fixed
diff --git a/package-lock.json b/package-lock.json
index 9edbf638..2e96dcb2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "cloudevents-sdk",
-  "version": "1.0.0",
+  "version": "2.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index f62797f0..bc572aae 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cloudevents-sdk",
-  "version": "1.0.0",
+  "version": "2.0.0",
   "description": "CloudEvents SDK for JavaScript",
   "main": "index.js",
   "scripts": {