diff --git a/package.json b/package.json
index c0062db46c..084f413605 100644
--- a/package.json
+++ b/package.json
@@ -105,7 +105,7 @@
     "what-input": "^5.2.10",
     "zxcvbn": "^4.4.2"
   },
-  "devDependencies": {
+  "devDependencies": {    
     "@babel/cli": "^7.12.10",
     "@babel/core": "^7.12.10",
     "@babel/eslint-parser": "^7.12.10",
@@ -125,6 +125,7 @@
     "@matrix-org/olm": "https://gitlab.matrix.org/api/v4/projects/27/packages/npm/@matrix-org/olm/-/@matrix-org/olm-3.2.3.tgz",
     "@peculiar/webcrypto": "^1.1.4",
     "@sinonjs/fake-timers": "^7.0.2",
+    "@sentry/types": "^6.2.2",
     "@types/classnames": "^2.2.11",
     "@types/commonmark": "^0.27.4",
     "@types/counterpart": "^0.18.1",
@@ -167,6 +168,7 @@
     "matrix-web-i18n": "github:matrix-org/matrix-web-i18n",
     "react-test-renderer": "^17.0.2",
     "rimraf": "^3.0.2",
+    "rrweb": "^0.9.9",
     "stylelint": "^13.9.0",
     "stylelint-config-standard": "^20.0.0",
     "stylelint-scss": "^3.18.0",
diff --git a/yarn.lock b/yarn.lock
index c4d1456612..78f4838a09 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1352,6 +1352,11 @@
     tslib "^2.2.0"
     webcrypto-core "^1.2.0"
 
+"@sentry/types@^6.2.2":
+  version "6.10.0"
+  resolved "https://registry.yarnpkg.com/@sentry/types/-/types-6.10.0.tgz#6b1f44e5ed4dbc2710bead24d1b32fb08daf04e1"
+  integrity sha512-M7s0JFgG7/6/yNVYoPUbxzaXDhnzyIQYRRJJKRaTD77YO4MHvi4Ke8alBWqD5fer0cPIfcSkBqa9BLdqRqcMWw==
+
 "@sinonjs/commons@^1.7.0":
   version "1.8.3"
   resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.8.3.tgz#3802ddd21a50a949b6721ddd72da36e67e7f1b2d"
@@ -1448,6 +1453,11 @@
   resolved "https://registry.yarnpkg.com/@types/counterpart/-/counterpart-0.18.1.tgz#b1b784d9e54d9879f0a8cb12f2caedab65430fe8"
   integrity sha512-PRuFlBBkvdDOtxlIASzTmkEFar+S66Ek48NVVTWMUjtJAdn5vyMSN8y6IZIoIymGpR36q2nZbIYazBWyFxL+IQ==
 
+"@types/css-font-loading-module@0.0.4":
+  version "0.0.4"
+  resolved "https://registry.yarnpkg.com/@types/css-font-loading-module/-/css-font-loading-module-0.0.4.tgz#94a835e27d1af444c65cba88523533c174463d64"
+  integrity sha512-ENdXf7MW4m9HeDojB2Ukbi7lYMIuQNBHVf98dbzaiG4EEJREBd6oleVAjrLRCrp7dm6CK1mmdmU9tcgF61acbw==
+
 "@types/css-font-loading-module@^0.0.6":
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/@types/css-font-loading-module/-/css-font-loading-module-0.0.6.tgz#1ac3417ed31eeb953134d29b56bca921644b87c0"
@@ -1790,6 +1800,11 @@
     object.fromentries "^2.0.0"
     prop-types "^15.7.0"
 
+"@xstate/fsm@^1.4.0":
+  version "1.6.1"
+  resolved "https://registry.yarnpkg.com/@xstate/fsm/-/fsm-1.6.1.tgz#c92972b835540c4e3c5e14277f40dbcbdaee9571"
+  integrity sha512-xYKDNuPR36/fUK+jmhM+oauBmbdUAfuJKnDjg3/7NbN+Pj03TX7e94LXnzkwGgAR+U/HWoMqM5UPTuGIYfIx9g==
+
 abab@^2.0.3, abab@^2.0.5:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/abab/-/abab-2.0.5.tgz#c0b678fb32d60fc1219c784d6a826fe385aeb79a"
@@ -3601,7 +3616,7 @@ fbjs@^0.8.4:
     setimmediate "^1.0.5"
     ua-parser-js "^0.7.18"
 
-fflate@^0.4.1:
+fflate@^0.4.1, fflate@^0.4.4:
   version "0.4.8"
   resolved "https://registry.yarnpkg.com/fflate/-/fflate-0.4.8.tgz#f90b82aefbd8ac174213abb338bd7ef848f0f5ae"
   integrity sha512-FJqqoDBR00Mdj9ppamLa/Y7vxm+PRmNWA67N846RvsoYVMKB4q3y/de5PA7gUmRMYK/8CMz2GDZQmCRN1wBcWA==
@@ -5639,6 +5654,11 @@ minimist@>=1.2.2, minimist@^1.1.1, minimist@^1.2.0, minimist@^1.2.5:
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.5.tgz#67d66014b66a6a8aaa0c083c5fd58df4e4e97602"
   integrity sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==
 
+mitt@^1.1.3:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/mitt/-/mitt-1.2.0.tgz#cb24e6569c806e31bd4e3995787fe38a04fdf90d"
+  integrity sha512-r6lj77KlwqLhIUku9UWYes7KJtsczvolZkzp8hbaDPPaE24OmWl5s539Mytlj22siEQKosZ26qCBgda2PKwoJw==
+
 mixin-deep@^1.2.0:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/mixin-deep/-/mixin-deep-1.3.2.tgz#1120b43dc359a785dce65b55b82e257ccf479566"
@@ -6841,6 +6861,22 @@ rimraf@^3.0.0, rimraf@^3.0.2:
   dependencies:
     glob "^7.1.3"
 
+rrweb-snapshot@^1.0.3:
+  version "1.1.7"
+  resolved "https://registry.yarnpkg.com/rrweb-snapshot/-/rrweb-snapshot-1.1.7.tgz#92a3b47b1112a1b566c2fae2edb02fa48a6f6653"
+  integrity sha512-+f2kCCvIQ1hbEeCWnV7mPVPDEdWEExqwcYqMd/r1nfK52QE7qU52jefUOyTe85Vy67rZGqWnfK/B25e/OTSgYg==
+
+rrweb@^0.9.9:
+  version "0.9.14"
+  resolved "https://registry.yarnpkg.com/rrweb/-/rrweb-0.9.14.tgz#09bec604fc44c74801e4fe910606e5a6cde008ec"
+  integrity sha512-nm2rrVNoyWFPrbGQmcvTTlA7XjbbgPIgO7qsW0Zyr5iOURIFJDGPHFmOVLRyLpWiriVtEoXh6a+x+D1sj+qwWg==
+  dependencies:
+    "@types/css-font-loading-module" "0.0.4"
+    "@xstate/fsm" "^1.4.0"
+    fflate "^0.4.4"
+    mitt "^1.1.3"
+    rrweb-snapshot "^1.0.3"
+
 rst-selector-parser@^2.2.3:
   version "2.2.3"
   resolved "https://registry.yarnpkg.com/rst-selector-parser/-/rst-selector-parser-2.2.3.tgz#81b230ea2fcc6066c89e3472de794285d9b03d91"