diff --git a/build/afterSignHook.js b/build/afterSignHook.js
new file mode 100644
index 000000000..c155feed8
--- /dev/null
+++ b/build/afterSignHook.js
@@ -0,0 +1,36 @@
+// See: https://medium.com/@TwitterArchiveEraser/notarize-electron-apps-7a5f988406db
+
+const fs = require('fs');
+const path = require('path');
+var electron_notarize = require('electron-notarize');
+
+module.exports = async function(params) {
+  // Only notarize the app on Mac OS only.
+  if (process.platform !== 'darwin') {
+    return;
+  }
+  console.log('afterSign hook triggered', params);
+
+  // Same appId in electron-builder.
+  let appId = 'io.lbry.LBRY';
+
+  let appPath = path.join(params.appOutDir, `${params.packager.appInfo.productFilename}.app`);
+  if (!fs.existsSync(appPath)) {
+    throw new Error(`Cannot find application at: ${appPath}`);
+  }
+
+  console.log(`Notarizing ${appId} found at ${appPath}`);
+
+  try {
+    await electron_notarize.notarize({
+      appBundleId: appId,
+      appPath: appPath,
+      appleId: process.env.appleId,
+      appleIdPassword: process.env.appleIdPassword,
+    });
+  } catch (error) {
+    console.error(error);
+  }
+
+  console.log(`Done notarizing ${appId}`);
+};
diff --git a/electron-builder.json b/electron-builder.json
index 755411427..bd6826104 100644
--- a/electron-builder.json
+++ b/electron-builder.json
@@ -71,15 +71,7 @@
     }
   },
   "deb": {
-    "depends": [
-      "gconf2",
-      "gconf-service",
-      "libnotify4",
-      "libappindicator1",
-      "libxtst6",
-      "libnss3",
-      "libsecret-1-0"
-    ]
+    "depends": ["gconf2", "gconf-service", "libnotify4", "libappindicator1", "libxtst6", "libnss3", "libsecret-1-0"]
   },
   "nsis": {
     "perMachine": true,
@@ -94,5 +86,6 @@
       }
     ]
   },
-  "artifactName": "${productName}_${version}.${ext}"
+  "artifactName": "${productName}_${version}.${ext}",
+  "afterSign": "./build/afterSignHook.js"
 }
diff --git a/package.json b/package.json
index a9f518080..1a8b5af75 100644
--- a/package.json
+++ b/package.json
@@ -45,6 +45,7 @@
   "dependencies": {
     "electron-dl": "^1.11.0",
     "electron-log": "^2.2.12",
+    "electron-notarize": "^0.1.1",
     "electron-updater": "^4.1.2",
     "express": "^4.16.4",
     "if-env": "^1.0.4",
diff --git a/yarn.lock b/yarn.lock
index 408c0b2d4..3318de9e2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3984,6 +3984,14 @@ electron-log@^2.2.12:
   resolved "https://registry.yarnpkg.com/electron-log/-/electron-log-2.2.17.tgz#e71e2ebb949fc96ded7cdb99eeee7202e48981d2"
   integrity sha512-v+Af5W5z99ehhaLOfE9eTSXUwjzh2wFlQjz51dvkZ6ZIrET6OB/zAZPvsuwT6tm3t5x+M1r+Ed3U3xtPZYAyuQ==
 
+electron-notarize@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/electron-notarize/-/electron-notarize-0.1.1.tgz#c3563d70c5e7b3315f44e8495b30050a8c408b91"
+  integrity sha512-TpKfJcz4LXl5jiGvZTs5fbEx+wUFXV5u8voeG5WCHWfY/cdgdD8lDZIZRqLVOtR3VO+drgJ9aiSHIO9TYn/fKg==
+  dependencies:
+    debug "^4.1.1"
+    fs-extra "^8.0.1"
+
 electron-publish@21.2.0:
   version "21.2.0"
   resolved "https://registry.yarnpkg.com/electron-publish/-/electron-publish-21.2.0.tgz#cc225cb46aa62e74b899f2f7299b396c9802387d"
@@ -5126,7 +5134,7 @@ fs-extra@^7.0.0, fs-extra@^7.0.1:
     jsonfile "^4.0.0"
     universalify "^0.1.0"
 
-fs-extra@^8.1.0:
+fs-extra@^8.0.1, fs-extra@^8.1.0:
   version "8.1.0"
   resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-8.1.0.tgz#49d43c45a88cd9677668cb7be1b46efdb8d2e1c0"
   integrity sha512-yhlQgA6mnOJUKOsRUFsgJdQCvkKhcz8tlZG5HBQfReYZy46OwLcY+Zia0mtdHsOo9y/hP+CxMN0TU9QxoOtG4g==