diff --git a/matrix-meetings-bot/package.json b/matrix-meetings-bot/package.json
index 7ea0c26f..3d0c4707 100644
--- a/matrix-meetings-bot/package.json
+++ b/matrix-meetings-bot/package.json
@@ -43,7 +43,7 @@
     "class-validator": "^0.14.0",
     "express": "^4.17.1",
     "html-entities": "^2.4.0",
-    "i18next": "^23.7.8",
+    "i18next": "^23.7.11",
     "i18next-fs-backend": "^2.3.1",
     "joi": "^17.11.0",
     "i18next-http-middleware": "^3.5.0",
diff --git a/matrix-meetings-widget/package.json b/matrix-meetings-widget/package.json
index b46b7013..a570dd59 100644
--- a/matrix-meetings-widget/package.json
+++ b/matrix-meetings-widget/package.json
@@ -14,13 +14,13 @@
     "@matrix-widget-toolkit/api": "^3.2.2",
     "@matrix-widget-toolkit/mui": "^1.1.6",
     "@matrix-widget-toolkit/react": "^1.0.5",
-    "@mui/icons-material": "^5.14.19",
-    "@mui/lab": "^5.0.0-alpha.155",
-    "@mui/material": "^5.14.20",
+    "@mui/icons-material": "^5.15.1",
+    "@mui/lab": "^5.0.0-alpha.157",
+    "@mui/material": "^5.15.1",
     "@mui/x-date-pickers": "^6.18.5",
     "@mui/utils": "^5.14.18",
     "@reduxjs/toolkit": "^1.9.7",
-    "i18next": "^23.7.8",
+    "i18next": "^23.7.11",
     "i18next-chained-backend": "^4.6.2",
     "i18next-http-backend": "^2.4.2",
     "joi": "^17.11.0",
diff --git a/yarn.lock b/yarn.lock
index 165ab0fd..88b5dcb4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1094,10 +1094,10 @@
     core-js-pure "^3.0.0"
     regenerator-runtime "^0.13.4"
 
-"@babel/runtime@^7.1.2", "@babel/runtime@^7.10.2", "@babel/runtime@^7.11.2", "@babel/runtime@^7.12.1", "@babel/runtime@^7.12.5", "@babel/runtime@^7.16.3", "@babel/runtime@^7.18.3", "@babel/runtime@^7.19.4", "@babel/runtime@^7.20.1", "@babel/runtime@^7.21.5", "@babel/runtime@^7.22.5", "@babel/runtime@^7.23.2", "@babel/runtime@^7.23.4", "@babel/runtime@^7.5.5", "@babel/runtime@^7.8.4", "@babel/runtime@^7.8.7", "@babel/runtime@^7.9.2":
-  version "7.23.5"
-  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.23.5.tgz#11edb98f8aeec529b82b211028177679144242db"
-  integrity sha512-NdUTHcPe4C99WxPub+K9l9tK5/lV4UXIoaHSYgzco9BCyjKAAwzdBI+wWtYqHt7LJdbo74ZjRPJgzVweq1sz0w==
+"@babel/runtime@^7.1.2", "@babel/runtime@^7.10.2", "@babel/runtime@^7.11.2", "@babel/runtime@^7.12.1", "@babel/runtime@^7.12.5", "@babel/runtime@^7.16.3", "@babel/runtime@^7.18.3", "@babel/runtime@^7.19.4", "@babel/runtime@^7.20.1", "@babel/runtime@^7.21.5", "@babel/runtime@^7.22.5", "@babel/runtime@^7.23.2", "@babel/runtime@^7.23.5", "@babel/runtime@^7.5.5", "@babel/runtime@^7.8.4", "@babel/runtime@^7.8.7", "@babel/runtime@^7.9.2":
+  version "7.23.6"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.23.6.tgz#c05e610dc228855dc92ef1b53d07389ed8ab521d"
+  integrity sha512-zHd0eUrf5GZoOWVCXp6koAKQTfZV07eit6bGPmJgnZdnSAvvZee6zniW2XMF7Cmc4ISOOnPy3QaSiIJGJkVEDQ==
   dependencies:
     regenerator-runtime "^0.14.0"
 
@@ -2132,106 +2132,106 @@
     strict-event-emitter "^0.2.4"
     web-encoding "^1.1.5"
 
-"@mui/base@5.0.0-beta.26", "@mui/base@^5.0.0-beta.22":
-  version "5.0.0-beta.26"
-  resolved "https://registry.yarnpkg.com/@mui/base/-/base-5.0.0-beta.26.tgz#5fab6062238dc17dd840bf1a17ab759370452713"
-  integrity sha512-gPMRKC84VRw+tjqYoyBzyrBUqHQucMXdlBpYazHa5rCXrb91fYEQk5SqQ2U5kjxx9QxZxTBvWAmZ6DblIgaGhQ==
+"@mui/base@5.0.0-beta.28", "@mui/base@^5.0.0-beta.22":
+  version "5.0.0-beta.28"
+  resolved "https://registry.yarnpkg.com/@mui/base/-/base-5.0.0-beta.28.tgz#f072e55c0530f456ee5cb5cde2af788fdda3bf05"
+  integrity sha512-KIoSc5sUFceeCaZTq5MQBapFzhHqMo4kj+4azWaCAjorduhcRQtN+BCgVHmo+gvEjix74bUfxwTqGifnu2fNTg==
   dependencies:
-    "@babel/runtime" "^7.23.4"
+    "@babel/runtime" "^7.23.5"
     "@floating-ui/react-dom" "^2.0.4"
-    "@mui/types" "^7.2.10"
-    "@mui/utils" "^5.14.20"
+    "@mui/types" "^7.2.11"
+    "@mui/utils" "^5.15.1"
     "@popperjs/core" "^2.11.8"
     clsx "^2.0.0"
     prop-types "^15.8.1"
 
-"@mui/core-downloads-tracker@^5.14.20":
-  version "5.14.20"
-  resolved "https://registry.yarnpkg.com/@mui/core-downloads-tracker/-/core-downloads-tracker-5.14.20.tgz#c9ce5ccfcc7972d3bc1623440e041e0a01386626"
-  integrity sha512-fXoGe8VOrIYajqALysFuyal1q1YmBARqJ3tmnWYDVl0scu8f6h6tZQbS2K8BY28QwkWNGyv4WRfuUkzN5HR3Ow==
+"@mui/core-downloads-tracker@^5.15.1":
+  version "5.15.1"
+  resolved "https://registry.yarnpkg.com/@mui/core-downloads-tracker/-/core-downloads-tracker-5.15.1.tgz#8aad47e2b198640244f05f6486a927ce362e814e"
+  integrity sha512-y/nUEsWHyBzaKYp9zLtqJKrLod/zMNEWpMj488FuQY9QTmqBiyUhI2uh7PVaLqLewXRtdmG6JV0b6T5exyuYRw==
 
-"@mui/icons-material@^5.14.14", "@mui/icons-material@^5.14.19":
-  version "5.14.19"
-  resolved "https://registry.yarnpkg.com/@mui/icons-material/-/icons-material-5.14.19.tgz#6e0f4e9d89f99517d3c0ee65dee7ac97753755af"
-  integrity sha512-yjP8nluXxZGe3Y7pS+yxBV+hWZSsSBampCxkZwaw+1l+feL+rfP74vbEFbMrX/Kil9I/Y1tWfy5bs/eNvwNpWw==
+"@mui/icons-material@^5.14.14", "@mui/icons-material@^5.15.1":
+  version "5.15.1"
+  resolved "https://registry.yarnpkg.com/@mui/icons-material/-/icons-material-5.15.1.tgz#38f51a88d224a107e753313b4d9815247caa5398"
+  integrity sha512-VPJdBSyap6uOxCb5BLbWbkvd6aeJCp1pQZm8DcZBITCH0NOSv8Mz9c8Zvo8xr4Od7+xyWHUAgvRSL4047pL2WQ==
   dependencies:
-    "@babel/runtime" "^7.23.4"
+    "@babel/runtime" "^7.23.5"
 
-"@mui/lab@^5.0.0-alpha.155":
-  version "5.0.0-alpha.155"
-  resolved "https://registry.yarnpkg.com/@mui/lab/-/lab-5.0.0-alpha.155.tgz#db9cd4815954f237541ba5aae7c7d61d92a4edae"
-  integrity sha512-9mE929QFToQnSghSwvcy3Yeg+Pkj2WnR6z9OP871JiqFDL80b6OaLg2qyUt4zTFhbiBwUyBTJQ9XFrkFIibLHw==
+"@mui/lab@^5.0.0-alpha.157":
+  version "5.0.0-alpha.157"
+  resolved "https://registry.yarnpkg.com/@mui/lab/-/lab-5.0.0-alpha.157.tgz#cb248823ffd881153eef86c2e3786c35601d1986"
+  integrity sha512-gY7UM2kNSxiVLfsm0o6HG2G5rM2Vr47prJhDCazY+VG/NOSRc8CG7la6dpL9WDTJhotEZdWwfj1FOUxTonmuQA==
   dependencies:
-    "@babel/runtime" "^7.23.4"
-    "@mui/base" "5.0.0-beta.26"
-    "@mui/system" "^5.14.20"
-    "@mui/types" "^7.2.10"
-    "@mui/utils" "^5.14.20"
+    "@babel/runtime" "^7.23.5"
+    "@mui/base" "5.0.0-beta.28"
+    "@mui/system" "^5.15.1"
+    "@mui/types" "^7.2.11"
+    "@mui/utils" "^5.15.1"
     clsx "^2.0.0"
     prop-types "^15.8.1"
 
-"@mui/material@^5.14.14", "@mui/material@^5.14.20":
-  version "5.14.20"
-  resolved "https://registry.yarnpkg.com/@mui/material/-/material-5.14.20.tgz#d9834187838011642779c57bbdd989275ef37b6d"
-  integrity sha512-SUcPZnN6e0h1AtrDktEl76Dsyo/7pyEUQ+SAVe9XhHg/iliA0b4Vo+Eg4HbNkELsMbpDsUF4WHp7rgflPG7qYQ==
-  dependencies:
-    "@babel/runtime" "^7.23.4"
-    "@mui/base" "5.0.0-beta.26"
-    "@mui/core-downloads-tracker" "^5.14.20"
-    "@mui/system" "^5.14.20"
-    "@mui/types" "^7.2.10"
-    "@mui/utils" "^5.14.20"
-    "@types/react-transition-group" "^4.4.9"
+"@mui/material@^5.14.14", "@mui/material@^5.15.1":
+  version "5.15.1"
+  resolved "https://registry.yarnpkg.com/@mui/material/-/material-5.15.1.tgz#5fc15c6eb9efe4b62b0c30b13bf5fa042bda71a1"
+  integrity sha512-WA5DVyvacxDakVyAhNqu/rRT28ppuuUFFw1bLpmRzrCJ4uw/zLTATcd4WB3YbB+7MdZNEGG/SJNWTDLEIyn3xQ==
+  dependencies:
+    "@babel/runtime" "^7.23.5"
+    "@mui/base" "5.0.0-beta.28"
+    "@mui/core-downloads-tracker" "^5.15.1"
+    "@mui/system" "^5.15.1"
+    "@mui/types" "^7.2.11"
+    "@mui/utils" "^5.15.1"
+    "@types/react-transition-group" "^4.4.10"
     clsx "^2.0.0"
     csstype "^3.1.2"
     prop-types "^15.8.1"
     react-is "^18.2.0"
     react-transition-group "^4.4.5"
 
-"@mui/private-theming@^5.14.20":
-  version "5.14.20"
-  resolved "https://registry.yarnpkg.com/@mui/private-theming/-/private-theming-5.14.20.tgz#ccb0ef60d854510585cb266780d6e37589693c40"
-  integrity sha512-WV560e1vhs2IHCh0pgUaWHznrcrVoW9+cDCahU1VTkuwPokWVvb71ccWQ1f8Y3tRBPPcNkU2dChkkRJChLmQlQ==
+"@mui/private-theming@^5.15.1":
+  version "5.15.1"
+  resolved "https://registry.yarnpkg.com/@mui/private-theming/-/private-theming-5.15.1.tgz#58fd8da48295e105067fa7361734ee0b166d9cca"
+  integrity sha512-wTbzuy5KjSvCPE9UVJktWHJ0b/tD5biavY9wvF+OpYDLPpdXK52vc1hTDxSbdkHIFMkJExzrwO9GvpVAHZBnFQ==
   dependencies:
-    "@babel/runtime" "^7.23.4"
-    "@mui/utils" "^5.14.20"
+    "@babel/runtime" "^7.23.5"
+    "@mui/utils" "^5.15.1"
     prop-types "^15.8.1"
 
-"@mui/styled-engine@^5.14.19":
-  version "5.14.19"
-  resolved "https://registry.yarnpkg.com/@mui/styled-engine/-/styled-engine-5.14.19.tgz#dee1d16044a5ef3a783b742381ea4348c159b013"
-  integrity sha512-jtj/Pyn/bS8PM7NXdFNTHWZfE3p+vItO4/HoQbUeAv3u+cnWXcTBGHHY/xdIn446lYGFDczTh1YyX8G4Ts0Rtg==
+"@mui/styled-engine@^5.15.1":
+  version "5.15.1"
+  resolved "https://registry.yarnpkg.com/@mui/styled-engine/-/styled-engine-5.15.1.tgz#00f179e51afe252022bf356f72354968f9c5bf25"
+  integrity sha512-7WDZTJLqGexWDjqE9oAgjU8ak6hEtUw2yQU7SIYID5kLVO2Nj/Wi/KicbLsXnTsJNvSqePIlUIWTBSXwWJCPZw==
   dependencies:
-    "@babel/runtime" "^7.23.4"
+    "@babel/runtime" "^7.23.5"
     "@emotion/cache" "^11.11.0"
     csstype "^3.1.2"
     prop-types "^15.8.1"
 
-"@mui/system@^5.14.20":
-  version "5.14.20"
-  resolved "https://registry.yarnpkg.com/@mui/system/-/system-5.14.20.tgz#4973883279377024ca2b4c98d311ec364f01875b"
-  integrity sha512-jKOGtK4VfYZG5kdaryUHss4X6hzcfh0AihT8gmnkfqRtWP7xjY+vPaUhhuSeibE5sqA5wCtdY75z6ep9pxFnIg==
+"@mui/system@^5.15.1":
+  version "5.15.1"
+  resolved "https://registry.yarnpkg.com/@mui/system/-/system-5.15.1.tgz#e2a79b5e188ca89a3e58aa4d27e3484edf9e24b0"
+  integrity sha512-LAnP0ls69rqW9eBgI29phIx/lppv+WDGI7b3EJN7VZIqw0RezA0GD7NRpV12BgEYJABEii6z5Q9B5tg7dsX0Iw==
   dependencies:
-    "@babel/runtime" "^7.23.4"
-    "@mui/private-theming" "^5.14.20"
-    "@mui/styled-engine" "^5.14.19"
-    "@mui/types" "^7.2.10"
-    "@mui/utils" "^5.14.20"
+    "@babel/runtime" "^7.23.5"
+    "@mui/private-theming" "^5.15.1"
+    "@mui/styled-engine" "^5.15.1"
+    "@mui/types" "^7.2.11"
+    "@mui/utils" "^5.15.1"
     clsx "^2.0.0"
     csstype "^3.1.2"
     prop-types "^15.8.1"
 
-"@mui/types@^7.2.10":
-  version "7.2.10"
-  resolved "https://registry.yarnpkg.com/@mui/types/-/types-7.2.10.tgz#13e3e9aa07ee6d593cfacd538e02e8e896d7a12f"
-  integrity sha512-wX1vbDC+lzF7FlhT6A3ffRZgEoKWPF8VqRoTu4lZwouFX2t90KyCMsgepMw5DxLak1BSp/KP86CmtZttikb/gQ==
+"@mui/types@^7.2.11":
+  version "7.2.11"
+  resolved "https://registry.yarnpkg.com/@mui/types/-/types-7.2.11.tgz#36b99a88f8010dc716128e568dc05681a69dc7ae"
+  integrity sha512-KWe/QTEsFFlFSH+qRYf3zoFEj3z67s+qAuSnMMg+gFwbxG7P96Hm6g300inQL1Wy///gSRb8juX7Wafvp93m3w==
 
-"@mui/utils@^5.14.13", "@mui/utils@^5.14.16", "@mui/utils@^5.14.18", "@mui/utils@^5.14.20":
-  version "5.14.20"
-  resolved "https://registry.yarnpkg.com/@mui/utils/-/utils-5.14.20.tgz#6d57b8ef02633fbeef51de8f74a2388cde7da8b9"
-  integrity sha512-Y6yL5MoFmtQml20DZnaaK1znrCEwG6/vRSzW8PKOTrzhyqKIql0FazZRUR7sA5EPASgiyKZfq0FPwISRXm5NdA==
+"@mui/utils@^5.14.13", "@mui/utils@^5.14.16", "@mui/utils@^5.14.18", "@mui/utils@^5.15.1":
+  version "5.15.1"
+  resolved "https://registry.yarnpkg.com/@mui/utils/-/utils-5.15.1.tgz#71d69dc8c0f13a1fd6aca20b53ec496636e6b854"
+  integrity sha512-V1/d0E3Bju5YdB59HJf2G0tnHrFEvWLN+f8hAXp9+JSNy/LC2zKyqUfPPahflR6qsI681P8G9r4mEZte/SrrYA==
   dependencies:
-    "@babel/runtime" "^7.23.4"
+    "@babel/runtime" "^7.23.5"
     "@types/prop-types" "^15.7.11"
     prop-types "^15.8.1"
     react-is "^18.2.0"
@@ -3045,10 +3045,10 @@
   dependencies:
     react-i18next "*"
 
-"@types/react-transition-group@^4.4.8", "@types/react-transition-group@^4.4.9":
-  version "4.4.9"
-  resolved "https://registry.yarnpkg.com/@types/react-transition-group/-/react-transition-group-4.4.9.tgz#12a1a1b5b8791067198149867b0823fbace31579"
-  integrity sha512-ZVNmWumUIh5NhH8aMD9CR2hdW0fNuYInlocZHaZ+dgk/1K49j1w/HoAuK1ki+pgscQrOFRTlXeoURtuzEkV3dg==
+"@types/react-transition-group@^4.4.10", "@types/react-transition-group@^4.4.8":
+  version "4.4.10"
+  resolved "https://registry.yarnpkg.com/@types/react-transition-group/-/react-transition-group-4.4.10.tgz#6ee71127bdab1f18f11ad8fb3322c6da27c327ac"
+  integrity sha512-hT/+s0VQs2ojCX823m60m5f0sL5idt9SO6Tj6Dg+rdphGPIeJbJ6CxvBYkgkGKrYeDjvIpKTR38UzmtHJOGW3Q==
   dependencies:
     "@types/react" "*"
 
@@ -7467,10 +7467,10 @@ i18next-resources-to-backend@^1.1.3:
   dependencies:
     "@babel/runtime" "^7.21.5"
 
-i18next@^23.5.1, i18next@^23.7.8:
-  version "23.7.8"
-  resolved "https://registry.yarnpkg.com/i18next/-/i18next-23.7.8.tgz#c59d5f4fb7761d67ceaa9ebea86a35aba0f846b2"
-  integrity sha512-yCe9964O+1abdIG01AOzk6P9mQi0HVJV1B57whYJQu6TjmrB9JHHDYonDI8amGt6M6b9bP3x3R0Zh7ROmvX7JQ==
+i18next@^23.5.1, i18next@^23.7.11:
+  version "23.7.11"
+  resolved "https://registry.yarnpkg.com/i18next/-/i18next-23.7.11.tgz#ee4dfa58f9b27807ebf57d7c33a6c4a0bb4bf7c8"
+  integrity sha512-A/vOkw8vY99YHU9A1Td3I1dcTiYaPnwBWzrpVzfXUXSYgogK3cmBcmop/0cnXPc6QpUWIyqaugKNxRUEZVk9Nw==
   dependencies:
     "@babel/runtime" "^7.23.2"