diff --git a/CHANGELOG.md b/CHANGELOG.md
index 72aec8b31751e3..8ce444d904673d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,100 @@
 # Node.js ChangeLog
 
+## 2015-10-29, Version 4.2.2 'Argon' (LTS), @jasnell
+
+### Notable changes
+
+This is an LTS maintenance release that addresses a number of issues:
+
+* [[`1d0f2cbf87`](https://github.com/nodejs/node/commit/1d0f2cbf87)] - **buffer**: fix value check for writeUInt{B,L}E (Trevor Norris) [#3500](https://github.com/nodejs/node/pull/3500)
+* [[`2a45b72b4a`](https://github.com/nodejs/node/commit/2a45b72b4a)] - **buffer**: don't CHECK on zero-sized realloc (Ben Noordhuis) [#3499](https://github.com/nodejs/node/pull/3499)
+* [[`a6469e901a`](https://github.com/nodejs/node/commit/a6469e901a)] - **deps**: backport 010897c from V8 upstream (Ali Ijaz Sheikh) [#3520](https://github.com/nodejs/node/pull/3520)
+* [[`cadee67c25`](https://github.com/nodejs/node/commit/cadee67c25)] - **deps**: backport 8d6a228 from the v8's upstream (Fedor Indutny) [#3549](https://github.com/nodejs/node/pull/3549)
+* [[`46c8c94055`](https://github.com/nodejs/node/commit/46c8c94055)] - **fs**: reduced duplicate code in fs.write() (ronkorving) [#2947](https://github.com/nodejs/node/pull/2947)
+* [[`0427cdf094`](https://github.com/nodejs/node/commit/0427cdf094)] - **http**: fix stalled pipeline bug (Fedor Indutny) [#3342](https://github.com/nodejs/node/pull/3342)
+* [[`2109708186`](https://github.com/nodejs/node/commit/2109708186)] - **lib**: fix cluster handle leak (Rich Trott) [#3510](https://github.com/nodejs/node/pull/3510)
+* [[`f49c7c6955`](https://github.com/nodejs/node/commit/f49c7c6955)] - **lib**: avoid REPL exit on completion error (Rich Trott) [#3358](https://github.com/nodejs/node/pull/3358)
+* [[`8a2c4aeeaa`](https://github.com/nodejs/node/commit/8a2c4aeeaa)] - **repl**: handle comments properly (Sakthipriyan Vairamani) [#3515](https://github.com/nodejs/node/pull/3515)
+* [[`a04408acce`](https://github.com/nodejs/node/commit/a04408acce)] - **repl**: limit persistent history correctly on load (Jeremiah Senkpiel) [#2356](https://github.com/nodejs/node/pull/2356)
+* [[`3bafe1a59b`](https://github.com/nodejs/node/commit/3bafe1a59b)] - **src**: fix race condition in debug signal on exit (Ben Noordhuis) [#3528](https://github.com/nodejs/node/pull/3528)
+* [[`fe01d0df7a`](https://github.com/nodejs/node/commit/fe01d0df7a)] - **src**: fix exception message encoding on Windows (Brian White) [#3288](https://github.com/nodejs/node/pull/3288)
+* [[`4bac5d9ddf`](https://github.com/nodejs/node/commit/4bac5d9ddf)] - **stream**: avoid unnecessary concat of a single buffer. (Calvin Metcalf) [#3300](https://github.com/nodejs/node/pull/3300)
+* [[`8d78d687d5`](https://github.com/nodejs/node/commit/8d78d687d5)] - **timers**: reuse timer in `setTimeout().unref()` (Fedor Indutny) [#3407](https://github.com/nodejs/node/pull/3407)
+* [[`e69c869399`](https://github.com/nodejs/node/commit/e69c869399)] - **tls**: TLSSocket options default isServer false (Yuval Brik) [#2614](https://github.com/nodejs/node/pull/2614)
+
+### Known issues
+
+* Some problems with unreferenced timers running during `beforeExit` are still to be resolved. See [#1264](https://github.com/nodejs/node/issues/1264).
+* Surrogate pair in REPL can freeze terminal. [#690](https://github.com/nodejs/node/issues/690)
+* Calling `dns.setServers()` while a DNS query is in progress can cause the process to crash on a failed assertion. [#894](https://github.com/nodejs/node/issues/894)
+* `url.resolve` may transfer the auth portion of the url when resolving between two full hosts, see [#1435](https://github.com/nodejs/node/issues/1435).
+
+### Commits
+
+* [[`1d0f2cbf87`](https://github.com/nodejs/node/commit/1d0f2cbf87)] - **buffer**: fix value check for writeUInt{B,L}E (Trevor Norris) [#3500](https://github.com/nodejs/node/pull/3500)
+* [[`2a45b72b4a`](https://github.com/nodejs/node/commit/2a45b72b4a)] - **buffer**: don't CHECK on zero-sized realloc (Ben Noordhuis) [#3499](https://github.com/nodejs/node/pull/3499)
+* [[`dc655e1dd2`](https://github.com/nodejs/node/commit/dc655e1dd2)] - **build**: rectify --link-module help text (P.S.V.R) [#3379](https://github.com/nodejs/node/pull/3379)
+* [[`a6469e901a`](https://github.com/nodejs/node/commit/a6469e901a)] - **deps**: backport 010897c from V8 upstream (Ali Ijaz Sheikh) [#3520](https://github.com/nodejs/node/pull/3520)
+* [[`cadee67c25`](https://github.com/nodejs/node/commit/cadee67c25)] - **deps**: backport 8d6a228 from the v8's upstream (Fedor Indutny) [#3549](https://github.com/nodejs/node/pull/3549)
+* [[`1ebd35550b`](https://github.com/nodejs/node/commit/1ebd35550b)] - **doc**: fix typos in changelog (reggi) [#3291](https://github.com/nodejs/node/pull/3291)
+* [[`fbd93d4c1c`](https://github.com/nodejs/node/commit/fbd93d4c1c)] - **doc**: more use-cases for promise events (Domenic Denicola) [#3438](https://github.com/nodejs/node/pull/3438)
+* [[`6ceb9af407`](https://github.com/nodejs/node/commit/6ceb9af407)] - **doc**: remove old note, 'cluster' is marked stable (Balázs Galambosi) [#3314](https://github.com/nodejs/node/pull/3314)
+* [[`a5f0d64ddc`](https://github.com/nodejs/node/commit/a5f0d64ddc)] - **doc**: createServer's key option can be an array (Sakthipriyan Vairamani) [#3123](https://github.com/nodejs/node/pull/3123)
+* [[`317e0ec6b3`](https://github.com/nodejs/node/commit/317e0ec6b3)] - **doc**: binary encoding is not deprecated (Trevor Norris) [#3441](https://github.com/nodejs/node/pull/3441)
+* [[`b422f6ee1a`](https://github.com/nodejs/node/commit/b422f6ee1a)] - **doc**: mention the behaviour if URL is invalid (Sakthipriyan Vairamani) [#2966](https://github.com/nodejs/node/pull/2966)
+* [[`bc29aad22b`](https://github.com/nodejs/node/commit/bc29aad22b)] - **doc**: fix indent in tls resumption example (Roman Reiss) [#3372](https://github.com/nodejs/node/pull/3372)
+* [[`313877bd8f`](https://github.com/nodejs/node/commit/313877bd8f)] - **doc**: fix typo in changelog (Timothy Gu) [#3353](https://github.com/nodejs/node/pull/3353)
+* [[`4be432862a`](https://github.com/nodejs/node/commit/4be432862a)] - **doc**: show keylen in pbkdf2 as a byte length (calebboyd) [#3334](https://github.com/nodejs/node/pull/3334)
+* [[`23a1140ddb`](https://github.com/nodejs/node/commit/23a1140ddb)] - **doc**: add information about Assert behavior and maintenance (Rich Trott) [#3330](https://github.com/nodejs/node/pull/3330)
+* [[`e04cb1e1fc`](https://github.com/nodejs/node/commit/e04cb1e1fc)] - **doc**: clarify API buffer.concat (Martii) [#3255](https://github.com/nodejs/node/pull/3255)
+* [[`eae714c370`](https://github.com/nodejs/node/commit/eae714c370)] - **doc**: clarify the use of `option.detached` (Kyle Smith) [#3250](https://github.com/nodejs/node/pull/3250)
+* [[`b884899e67`](https://github.com/nodejs/node/commit/b884899e67)] - **doc**: label v4.2.1 as LTS in changelog heading (Phillip Johnsen) [#3360](https://github.com/nodejs/node/pull/3360)
+* [[`9120a04981`](https://github.com/nodejs/node/commit/9120a04981)] - **docs**: add missing shell option to execSync (fansworld-claudio) [#3440](https://github.com/nodejs/node/pull/3440)
+* [[`46c8c94055`](https://github.com/nodejs/node/commit/46c8c94055)] - **fs**: reduced duplicate code in fs.write() (ronkorving) [#2947](https://github.com/nodejs/node/pull/2947)
+* [[`0427cdf094`](https://github.com/nodejs/node/commit/0427cdf094)] - **http**: fix stalled pipeline bug (Fedor Indutny) [#3342](https://github.com/nodejs/node/pull/3342)
+* [[`2109708186`](https://github.com/nodejs/node/commit/2109708186)] - **lib**: fix cluster handle leak (Rich Trott) [#3510](https://github.com/nodejs/node/pull/3510)
+* [[`f49c7c6955`](https://github.com/nodejs/node/commit/f49c7c6955)] - **lib**: avoid REPL exit on completion error (Rich Trott) [#3358](https://github.com/nodejs/node/pull/3358)
+* [[`8a2c4aeeaa`](https://github.com/nodejs/node/commit/8a2c4aeeaa)] - **repl**: handle comments properly (Sakthipriyan Vairamani) [#3515](https://github.com/nodejs/node/pull/3515)
+* [[`a04408acce`](https://github.com/nodejs/node/commit/a04408acce)] - **repl**: limit persistent history correctly on load (Jeremiah Senkpiel) [#2356](https://github.com/nodejs/node/pull/2356)
+* [[`5d1f1c5fa8`](https://github.com/nodejs/node/commit/5d1f1c5fa8)] - **src**: wrap source before doing syntax check (Evan Lucas) [#3587](https://github.com/nodejs/node/pull/3587)
+* [[`3bafe1a59b`](https://github.com/nodejs/node/commit/3bafe1a59b)] - **src**: fix race condition in debug signal on exit (Ben Noordhuis) [#3528](https://github.com/nodejs/node/pull/3528)
+* [[`fe01d0df7a`](https://github.com/nodejs/node/commit/fe01d0df7a)] - **src**: fix exception message encoding on Windows (Brian White) [#3288](https://github.com/nodejs/node/pull/3288)
+* [[`4bac5d9ddf`](https://github.com/nodejs/node/commit/4bac5d9ddf)] - **stream**: avoid unnecessary concat of a single buffer. (Calvin Metcalf) [#3300](https://github.com/nodejs/node/pull/3300)
+* [[`117fb47a16`](https://github.com/nodejs/node/commit/117fb47a16)] - **stream**: fix signature of _write() in a comment (Fábio Santos) [#3248](https://github.com/nodejs/node/pull/3248)
+* [[`c563a34427`](https://github.com/nodejs/node/commit/c563a34427)] - **test**: split independent tests into separate files (Rich Trott) [#3548](https://github.com/nodejs/node/pull/3548)
+* [[`3f62952d42`](https://github.com/nodejs/node/commit/3f62952d42)] - **test**: add node::MakeCallback() test coverage (Ben Noordhuis) [#3478](https://github.com/nodejs/node/pull/3478)
+* [[`6b75f10d8a`](https://github.com/nodejs/node/commit/6b75f10d8a)] - **test**: use port number from env in tls socket test (Stefan Budeanu) [#3557](https://github.com/nodejs/node/pull/3557)
+* [[`39ff44e94f`](https://github.com/nodejs/node/commit/39ff44e94f)] - **test**: fix heap-profiler link error LNK1194 on win (Junliang Yan) [#3572](https://github.com/nodejs/node/pull/3572)
+* [[`a2786dd408`](https://github.com/nodejs/node/commit/a2786dd408)] - **test**: fix missing unistd.h on windows (Junliang Yan) [#3532](https://github.com/nodejs/node/pull/3532)
+* [[`5e6f7c9a23`](https://github.com/nodejs/node/commit/5e6f7c9a23)] - **test**: add regression test for --debug-brk -e 0 (Ben Noordhuis) [#3585](https://github.com/nodejs/node/pull/3585)
+* [[`7cad182cb6`](https://github.com/nodejs/node/commit/7cad182cb6)] - **test**: port domains regression test from v0.10 (Jonas Dohse) [#3356](https://github.com/nodejs/node/pull/3356)
+* [[`78d854c6ce`](https://github.com/nodejs/node/commit/78d854c6ce)] - **test**: remove util from common (Rich Trott) [#3324](https://github.com/nodejs/node/pull/3324)
+* [[`c566c8b8c0`](https://github.com/nodejs/node/commit/c566c8b8c0)] - **test**: remove util properties from common (Rich Trott) [#3304](https://github.com/nodejs/node/pull/3304)
+* [[`eb7c3fb2f4`](https://github.com/nodejs/node/commit/eb7c3fb2f4)] - **test**: split up buffer tests for reliability (Rich Trott) [#3323](https://github.com/nodejs/node/pull/3323)
+* [[`b398a85e19`](https://github.com/nodejs/node/commit/b398a85e19)] - **test**: parallelize long-running test (Rich Trott) [#3287](https://github.com/nodejs/node/pull/3287)
+* [[`b5f3b4956b`](https://github.com/nodejs/node/commit/b5f3b4956b)] - **test**: change call to deprecated util.isError() (Rich Trott) [#3084](https://github.com/nodejs/node/pull/3084)
+* [[`32149cacb5`](https://github.com/nodejs/node/commit/32149cacb5)] - **test**: improve tests for util.inherits (Michaël Zasso) [#3507](https://github.com/nodejs/node/pull/3507)
+* [[`5be686fab8`](https://github.com/nodejs/node/commit/5be686fab8)] - **test**: print helpful err msg on test-dns-ipv6.js (Junliang Yan) [#3501](https://github.com/nodejs/node/pull/3501)
+* [[`0429131e32`](https://github.com/nodejs/node/commit/0429131e32)] - **test**: fix domain with abort-on-uncaught on PPC (Julien Gilli) [#3354](https://github.com/nodejs/node/pull/3354)
+* [[`788106eee9`](https://github.com/nodejs/node/commit/788106eee9)] - **test**: cleanup, improve repl-persistent-history (Jeremiah Senkpiel) [#2356](https://github.com/nodejs/node/pull/2356)
+* [[`ea58fa0bac`](https://github.com/nodejs/node/commit/ea58fa0bac)] - **test**: add Symbol test for assert.deepEqual() (Rich Trott) [#3327](https://github.com/nodejs/node/pull/3327)
+* [[`d409ac473b`](https://github.com/nodejs/node/commit/d409ac473b)] - **test**: disable test-tick-processor - aix and be ppc (Michael Dawson) [#3491](https://github.com/nodejs/node/pull/3491)
+* [[`c1623039dd`](https://github.com/nodejs/node/commit/c1623039dd)] - **test**: harden test-child-process-fork-regr-gh-2847 (Michael Dawson) [#3459](https://github.com/nodejs/node/pull/3459)
+* [[`3bb4437abb`](https://github.com/nodejs/node/commit/3bb4437abb)] - **test**: fix test-net-keepalive for AIX (Imran Iqbal) [#3458](https://github.com/nodejs/node/pull/3458)
+* [[`af55641a69`](https://github.com/nodejs/node/commit/af55641a69)] - **test**: wrap assert.fail when passed to callback (Myles Borins) [#3453](https://github.com/nodejs/node/pull/3453)
+* [[`7c7ef01e65`](https://github.com/nodejs/node/commit/7c7ef01e65)] - **test**: skip test-dns-ipv6.js if ipv6 is unavailable (Junliang Yan) [#3444](https://github.com/nodejs/node/pull/3444)
+* [[`a4d1510ba4`](https://github.com/nodejs/node/commit/a4d1510ba4)] - **test**: repl-persistent-history is no longer flaky (Jeremiah Senkpiel) [#3437](https://github.com/nodejs/node/pull/3437)
+* [[`a5d968b8a2`](https://github.com/nodejs/node/commit/a5d968b8a2)] - **test**: fix flaky test-child-process-emfile (Rich Trott) [#3430](https://github.com/nodejs/node/pull/3430)
+* [[`eac2acca76`](https://github.com/nodejs/node/commit/eac2acca76)] - **test**: remove flaky status from eval_messages test (Rich Trott) [#3420](https://github.com/nodejs/node/pull/3420)
+* [[`155c778584`](https://github.com/nodejs/node/commit/155c778584)] - **test**: fix flaky test for symlinks (Rich Trott) [#3418](https://github.com/nodejs/node/pull/3418)
+* [[`74eb632483`](https://github.com/nodejs/node/commit/74eb632483)] - **test**: apply correct assert.fail() arguments (Rich Trott) [#3378](https://github.com/nodejs/node/pull/3378)
+* [[`0a4323dd82`](https://github.com/nodejs/node/commit/0a4323dd82)] - **test**: replace util with backtick strings (Myles Borins) [#3359](https://github.com/nodejs/node/pull/3359)
+* [[`93847694ec`](https://github.com/nodejs/node/commit/93847694ec)] - **test**: add test-child-process-emfile fail message (Rich Trott) [#3335](https://github.com/nodejs/node/pull/3335)
+* [[`8d78d687d5`](https://github.com/nodejs/node/commit/8d78d687d5)] - **timers**: reuse timer in `setTimeout().unref()` (Fedor Indutny) [#3407](https://github.com/nodejs/node/pull/3407)
+* [[`e69c869399`](https://github.com/nodejs/node/commit/e69c869399)] - **tls**: TLSSocket options default isServer false (Yuval Brik) [#2614](https://github.com/nodejs/node/pull/2614)
+* [[`0b32bbbf69`](https://github.com/nodejs/node/commit/0b32bbbf69)] - **v8**: pull fix for builtin code size on PPC (Michael Dawson) [#3474](https://github.com/nodejs/node/pull/3474)
+
+
 ## 2015-10-13, Version 4.2.1 'Argon' (LTS), @jasnell
 
 ### Notable changes
diff --git a/src/node_version.h b/src/node_version.h
index 0826681aacc339..bd66ec4b6b538e 100644
--- a/src/node_version.h
+++ b/src/node_version.h
@@ -8,7 +8,7 @@
 #define NODE_VERSION_IS_LTS 1
 #define NODE_VERSION_LTS_CODENAME "Argon"
 
-#define NODE_VERSION_IS_RELEASE 0
+#define NODE_VERSION_IS_RELEASE 1
 
 #ifndef NODE_STRINGIFY
 #define NODE_STRINGIFY(n) NODE_STRINGIFY_HELPER(n)