diff --git a/CHANGELOG b/CHANGELOG
index 4214a70..6e97953 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -231,3 +231,10 @@
 [1.12.1]
 * Updat Synapse to 1.21.1
 * [Full changelog](https://github.com/matrix-org/synapse/releases/tag/v1.21.1)
+
+[1.12.2]
+* Update Synapse to 1.21.2
+* [Full changelog](https://github.com/matrix-org/synapse/releases/tag/v1.21.2)
+* Security: HTML pages served via Synapse were vulnerable to cross-site scripting (XSS) attacks. All server administrators are encouraged to upgrade
+* Fix rare bug where sending an event would fail due to a racey assertion. (#8530)
+
diff --git a/CloudronManifest.json b/CloudronManifest.json
index 6055072..998c30b 100644
--- a/CloudronManifest.json
+++ b/CloudronManifest.json
@@ -5,7 +5,7 @@
   "description": "file://DESCRIPTION.md",
   "changelog": "file://CHANGELOG",
   "tagline": "Secure & decentralized communication",
-  "version": "1.12.1",
+  "version": "1.12.2",
   "healthCheckPath": "/",
   "httpPort": 8008,
   "memoryLimit": 536870912,
diff --git a/DESCRIPTION.md b/DESCRIPTION.md
index e9dd865..f8fbeab 100644
--- a/DESCRIPTION.md
+++ b/DESCRIPTION.md
@@ -1,4 +1,4 @@
-This app packages Synapse <upstream>1.21.1</upstream>.
+This app packages Synapse <upstream>1.21.2</upstream>.
 
 **This package only provides the Matrix backend. A variety of clients are available
 [here](https://matrix.org/clients/). Riot is a popular web frontend for Matrix and
diff --git a/test/package-lock.json b/test/package-lock.json
index 8a5b10a..b8d03d5 100644
--- a/test/package-lock.json
+++ b/test/package-lock.json
@@ -52,9 +52,9 @@
       "integrity": "sha512-tHq6qdbT9U1IRSGf14CL0pUlULksvY9OZ+5eEgl1N7t+OA3tGvNpxJCzuKQlsNgCVwbAs670L1vcVQi8j9HjnA=="
     },
     "@types/node": {
-      "version": "14.11.1",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.11.1.tgz",
-      "integrity": "sha512-oTQgnd0hblfLsJ6BvJzzSL+Inogp3lq9fGgqRkMB/ziKMgEUaFl801OncOzUmalfzt14N0oPHMK47ipl+wbTIw=="
+      "version": "14.11.8",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.11.8.tgz",
+      "integrity": "sha512-KPcKqKm5UKDkaYPTuXSx8wEP7vE9GnuaXIZKijwRYcePpZFDVuy2a57LarFKiORbHOuTOOwYzxVxcUzsh2P2Pw=="
     },
     "@types/yauzl": {
       "version": "2.9.1",
@@ -234,9 +234,9 @@
       }
     },
     "chromedriver": {
-      "version": "85.0.1",
-      "resolved": "https://registry.npmjs.org/chromedriver/-/chromedriver-85.0.1.tgz",
-      "integrity": "sha512-z8je3U4tXFZnx7AloRabM4Ep1lpFJvHxLoGuRvLg33Qy0UKk/z6OXmHUO2z6DKE0Oe6CFpjj/bdhuQ8dfvq9ug==",
+      "version": "86.0.0",
+      "resolved": "https://registry.npmjs.org/chromedriver/-/chromedriver-86.0.0.tgz",
+      "integrity": "sha512-byLJWhAfuYOmzRYPDf4asJgGDbI4gJGHa+i8dnQZGuv+6WW1nW1Fg+8zbBMOfLvGn7sKL41kVdmCEVpQHn9oyg==",
       "requires": {
         "@testim/chrome-version": "^1.0.7",
         "axios": "^0.19.2",
diff --git a/test/package.json b/test/package.json
index 66d310c..a3f21a9 100644
--- a/test/package.json
+++ b/test/package.json
@@ -9,7 +9,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "chromedriver": "^85.0.1",
+    "chromedriver": "^86.0.0",
     "ejs": "^3.1.5",
     "expect.js": "^0.3.1",
     "mkdirp": "^1.0.4",