diff --git a/CHANGELOG.md b/CHANGELOG.md
index d44d7e3869543a..a1801a86ae42ea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,7 +29,8 @@ release.
 </tr>
 <tr>
     <td valign="top">
-<b><a href="doc/changelogs/CHANGELOG_V9.md#9.2.0">9.2.0</a></b><br/>
+<b><a href="doc/changelogs/CHANGELOG_V9.md#9.2.1">9.2.1</a></b><br/>
+<a href="doc/changelogs/CHANGELOG_V9.md#9.2.0">9.2.0</a><br/>
 <a href="doc/changelogs/CHANGELOG_V9.md#9.1.0">9.1.0</a><br/>
 <a href="doc/changelogs/CHANGELOG_V9.md#9.0.0">9.0.0</a><br/>
     </td>
diff --git a/doc/api/buffer.md b/doc/api/buffer.md
index c9f975770bc6ae..9b0f36f2da592d 100644
--- a/doc/api/buffer.md
+++ b/doc/api/buffer.md
@@ -511,7 +511,7 @@ console.log(buf2.toString());
 <!-- YAML
 added: v5.10.0
 changes:
-  - version: REPLACEME
+  - version: v9.2.1
     pr-url: https://github.com/nodejs/node/pull/17428
     description: Specifying an invalid string for `fill` now results in a
                  zero-filled buffer.
diff --git a/doc/changelogs/CHANGELOG_V9.md b/doc/changelogs/CHANGELOG_V9.md
index ffe6c1d33ccbc8..73693e0e514575 100644
--- a/doc/changelogs/CHANGELOG_V9.md
+++ b/doc/changelogs/CHANGELOG_V9.md
@@ -6,6 +6,7 @@
 </tr>
 <tr>
 <td>
+<a href="#9.2.1">9.2.1</a><br/>
 <a href="#9.2.0">9.2.0</a><br/>
 <a href="#9.1.0">9.1.0</a><br/>
 <a href="#9.0.0">9.0.0</a><br/>
@@ -24,6 +25,37 @@
   * [io.js](CHANGELOG_IOJS.md)
   * [Archive](CHANGELOG_ARCHIVE.md)
 
+<a id="9.2.1"></a>
+## 2017-12-08, Version 9.2.1 (Current), @evanlucas
+
+This is a security release. All Node.js users should consult the security release summary at https://nodejs.org/en/blog/vulnerability/december-2017-security-releases/ for details on patched vulnerabilities.
+
+Fixes for the following CVEs are included in this release:
+
+* CVE-2017-15896
+* CVE-2017-15897
+* CVE-2017-3738 (from the openssl project)
+
+### Notable Changes
+
+* **buffer**:
+  * buffer allocated with an invalid content will now be zero filled (Anna Henningsen) [#17428](https://github.com/nodejs/node/pull/17428)
+* **deps**:
+  * openssl updated to 1.0.2n (Shigeki Ohtsu) [#17526](https://github.com/nodejs/node/pull/17526)
+
+### Commits
+
+* [[`15bf640668`](https://github.com/nodejs/node/commit/15bf640668)] - **buffer**: zero-fill buffer allocated with invalid content (Anna Henningsen) [#17428](https://github.com/nodejs/node/pull/17428)
+* [[`c0954f4ba1`](https://github.com/nodejs/node/commit/c0954f4ba1)] - **deps**: update openssl asm and asm_obsolete files (Shigeki Ohtsu) [#17526](https://github.com/nodejs/node/pull/17526)
+* [[`dfd7cd3038`](https://github.com/nodejs/node/commit/dfd7cd3038)] - **deps**: add -no_rand_screen to openssl s_client (Shigeki Ohtsu) [nodejs/io.js#1836](https://github.com/nodejs/io.js/pull/1836)
+* [[`76e7ff2915`](https://github.com/nodejs/node/commit/76e7ff2915)] - **deps**: fix asm build error of openssl in x86_win32 (Shigeki Ohtsu) [iojs/io.js#1389](https://github.com/iojs/io.js/pull/1389)
+* [[`593f21ee9c`](https://github.com/nodejs/node/commit/593f21ee9c)] - **deps**: fix openssl assembly error on ia32 win32 (Fedor Indutny) [iojs/io.js#1389](https://github.com/iojs/io.js/pull/1389)
+* [[`235c78f968`](https://github.com/nodejs/node/commit/235c78f968)] - **deps**: copy all openssl header files to include dir (Shigeki Ohtsu) [#17526](https://github.com/nodejs/node/pull/17526)
+* [[`b0ebe5cb4b`](https://github.com/nodejs/node/commit/b0ebe5cb4b)] - **deps**: upgrade openssl sources to 1.0.2n (Shigeki Ohtsu) [#17526](https://github.com/nodejs/node/pull/17526)
+* [[`99fc75e9bc`](https://github.com/nodejs/node/commit/99fc75e9bc)] - **doc**: warn against filling buffer with invalid data (Anna Henningsen) [#17428](https://github.com/nodejs/node/pull/17428)
+* [[`71cf21a846`](https://github.com/nodejs/node/commit/71cf21a846)] - **http2**: use correct connect event for TLS Socket (James M Snell) [#17328](https://github.com/nodejs/node/pull/17328)
+* [[`e14c0babe0`](https://github.com/nodejs/node/commit/e14c0babe0)] - **openssl**: fix keypress requirement in apps on win32 (Shigeki Ohtsu) [iojs/io.js#1389](https://github.com/iojs/io.js/pull/1389)
+
 <a id="9.2.0"></a>
 ## 2017-11-14, Version 9.2.0 (Current), @evanlucas
 
diff --git a/src/node_version.h b/src/node_version.h
index b8917b7629dbf7..a17b9eab7c2c5d 100644
--- a/src/node_version.h
+++ b/src/node_version.h
@@ -26,7 +26,7 @@
 #define NODE_MINOR_VERSION 2
 #define NODE_PATCH_VERSION 1
 
-#define NODE_VERSION_IS_RELEASE 0
+#define NODE_VERSION_IS_RELEASE 1
 
 #ifndef NODE_STRINGIFY
 #define NODE_STRINGIFY(n) NODE_STRINGIFY_HELPER(n)