diff --git a/CHANGELOG.md b/CHANGELOG.md
index b7c877c..07755c5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+Changes in [1.11.43](https://github.com/vector-im/element-desktop/releases/tag/v1.11.43) (2023-09-15)
+=====================================================================================================
+
+## 🔒 Security
+ * upgrade electron to 26.2.1 to fix CVE-2023-4863 ([\#1226](https://github.com/vector-im/element-desktop/pull/1226)). Contributed by @selfisekai.
+
 Changes in [1.11.42](https://github.com/vector-im/element-desktop/releases/tag/v1.11.42) (2023-09-13)
 =====================================================================================================
 
diff --git a/package.json b/package.json
index ceb58e8..e3819c8 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "name": "element-desktop",
     "productName": "Element",
     "main": "lib/electron-main.js",
-    "version": "1.11.42",
+    "version": "1.11.43",
     "description": "A feature-rich client for Matrix.org",
     "author": "Element",
     "homepage": "https://element.io",
diff --git a/yarn.lock b/yarn.lock
index 958a362..c6db64d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1065,7 +1065,15 @@
     fs-extra "^9.0.1"
     promise-retry "^2.0.1"
 
-"@electron/osx-sign@1.0.5":
+"@electron/notarize@^1.2.3":
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/@electron/notarize/-/notarize-1.2.4.tgz#a7d38773f4cad40df111a5edc64037e5d768ea1e"
+  integrity sha512-W5GQhJEosFNafewnS28d3bpQ37/s91CDWqxVchHfmv2dQSTWpOzNlUVQwYzC1ay5bChRV/A9BTL68yj0Pa+TSg==
+  dependencies:
+    debug "^4.1.1"
+    fs-extra "^9.0.1"
+
+"@electron/osx-sign@1.0.5", "@electron/osx-sign@^1.0.4":
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/@electron/osx-sign/-/osx-sign-1.0.5.tgz#0af7149f2fce44d1a8215660fd25a9fb610454d8"
   integrity sha512-k9ZzUQtamSoweGQDV2jILiRIHUu7lYlJ3c6IEmjv1hC17rclE+eb9U+f6UFlOOETo0JzY1HNlXy4YOlCvl+Lww==
@@ -1090,6 +1098,19 @@
     minimatch "^3.0.4"
     plist "^3.0.4"
 
+"@electron/universal@1.4.1":
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/@electron/universal/-/universal-1.4.1.tgz#3fbda2a5ed9ff9f3304c8e8316b94c1e3a7b3785"
+  integrity sha512-lE/U3UNw1YHuowNbTmKNs9UlS3En3cPgwM5MI+agIgr/B1hSze9NdOP0qn7boZaI9Lph8IDv3/24g9IxnJP7aQ==
+  dependencies:
+    "@electron/asar" "^3.2.1"
+    "@malept/cross-spawn-promise" "^1.1.0"
+    debug "^4.3.1"
+    dir-compare "^3.0.0"
+    fs-extra "^9.0.1"
+    minimatch "^3.0.4"
+    plist "^3.0.4"
+
 "@eslint-community/eslint-utils@^4.2.0", "@eslint-community/eslint-utils@^4.4.0":
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/@eslint-community/eslint-utils/-/eslint-utils-4.4.0.tgz#a23514e8fb9af1269d5f7788aa556798d61c6b59"
@@ -2326,6 +2347,40 @@ app-builder-lib@24.6.4:
     tar "^6.1.12"
     temp-file "^3.4.0"
 
+app-builder-lib@24.6.4:
+  version "24.6.4"
+  resolved "https://registry.yarnpkg.com/app-builder-lib/-/app-builder-lib-24.6.4.tgz#5bf77dd89d3ee557bc615b9ddfaf383f3e51577b"
+  integrity sha512-m9931WXb83teb32N0rKg+ulbn6+Hl8NV5SUpVDOVz9MWOXfhV6AQtTdftf51zJJvCQnQugGtSqoLvgw6mdF/Rg==
+  dependencies:
+    "7zip-bin" "~5.1.1"
+    "@develar/schema-utils" "~2.6.5"
+    "@electron/notarize" "2.1.0"
+    "@electron/osx-sign" "1.0.5"
+    "@electron/universal" "1.4.1"
+    "@malept/flatpak-bundler" "^0.4.0"
+    "@types/fs-extra" "9.0.13"
+    async-exit-hook "^2.0.1"
+    bluebird-lst "^1.0.9"
+    builder-util "24.5.0"
+    builder-util-runtime "9.2.1"
+    chromium-pickle-js "^0.2.0"
+    debug "^4.3.4"
+    ejs "^3.1.8"
+    electron-publish "24.5.0"
+    form-data "^4.0.0"
+    fs-extra "^10.1.0"
+    hosted-git-info "^4.1.0"
+    is-ci "^3.0.0"
+    isbinaryfile "^5.0.0"
+    js-yaml "^4.1.0"
+    lazy-val "^1.0.5"
+    minimatch "^5.1.1"
+    read-config-file "6.3.2"
+    sanitize-filename "^1.6.3"
+    semver "^7.3.8"
+    tar "^6.1.12"
+    temp-file "^3.4.0"
+
 applescript@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/applescript/-/applescript-1.0.0.tgz#bb87af568cad034a4e48c4bdaf6067a3a2701317"