diff --git a/ACKNOWLEDGMENTS.md b/ACKNOWLEDGMENTS.md
index 1090140212ed..7521219bd4e8 100644
--- a/ACKNOWLEDGMENTS.md
+++ b/ACKNOWLEDGMENTS.md
@@ -1,4 +1,4 @@
-<!-- Copyright 2020-2021 Signal Messenger, LLC -->
+<!-- Copyright 2020-2022 Signal Messenger, LLC -->
 <!-- SPDX-License-Identifier: AGPL-3.0-only -->
 
 # Acknowledgments
diff --git a/app/main.ts b/app/main.ts
index 85d4c733bb0b..f54ad640b41e 100644
--- a/app/main.ts
+++ b/app/main.ts
@@ -325,7 +325,6 @@ function prepareUrl(
     appStartInitialSpellcheckSetting,
     userDataPath: app.getPath('userData'),
     downloadsPath: app.getPath('downloads'),
-    isLegacyOS: OS.isLegacy(),
     homePath: app.getPath('home'),
     ...moreKeys,
   }).href;
diff --git a/package.json b/package.json
index 5bd7b31205f9..a911404783b6 100644
--- a/package.json
+++ b/package.json
@@ -257,7 +257,7 @@
     "core-js": "2.6.9",
     "cross-env": "5.2.0",
     "css-loader": "3.2.0",
-    "electron": "16.0.4",
+    "electron": "16.0.6",
     "electron-builder": "22.14.5",
     "electron-mocha": "11.0.2",
     "electron-notarize": "0.1.1",
diff --git a/preload.js b/preload.js
index 5de11bb13f35..166cdec9a6c5 100644
--- a/preload.js
+++ b/preload.js
@@ -70,7 +70,6 @@ try {
   window.getServerPublicParams = () => config.serverPublicParams;
   window.getSfuUrl = () => config.sfuUrl;
   window.isBehindProxy = () => Boolean(config.proxyUrl);
-  window.isLegacyOS = () => config.isLegacyOS === 'true';
   window.getAutoLaunch = () => {
     return ipc.invoke('get-auto-launch');
   };
diff --git a/ts/OS.ts b/ts/OS.ts
index 7714dc7187a8..73598af018b7 100644
--- a/ts/OS.ts
+++ b/ts/OS.ts
@@ -16,16 +16,3 @@ export const isWindows = (minVersion?: string): boolean => {
 
   return is.undefined(minVersion) ? true : semver.gte(osRelease, minVersion);
 };
-
-export const isLegacy = (): boolean => {
-  if (process.platform === 'darwin') {
-    // 17.0.0 - is macOS 10.13
-    return semver.lt(os.release(), '17.0.0');
-  }
-
-  if (process.platform === 'win32') {
-    return semver.lt(os.release(), '9.0.0');
-  }
-
-  return false;
-};
diff --git a/ts/components/Lightbox.tsx b/ts/components/Lightbox.tsx
index ca564a8c59fc..4b4ef1406492 100644
--- a/ts/components/Lightbox.tsx
+++ b/ts/components/Lightbox.tsx
@@ -18,10 +18,8 @@ import { IMAGE_PNG, isImage, isVideo } from '../types/MIME';
 import type { LocalizerType } from '../types/Util';
 import type { MediaItemType, MessageAttributesType } from '../types/MediaItem';
 import { formatDuration } from '../util/formatDuration';
-import { showToast } from '../util/showToast';
 import { useRestoreFocus } from '../hooks/useRestoreFocus';
 import * as log from '../logging/log';
-import { ToastUnableToLoadAttachment } from './ToastUnableToLoadAttachment';
 
 export type PropsType = {
   children?: ReactNode;
@@ -455,25 +453,6 @@ export function Lightbox({
           />
         );
       }
-    } else if (isVideoTypeSupported && window.isLegacyOS()) {
-      const onLegacyClick = (event: React.MouseEvent<HTMLVideoElement>) => {
-        event.preventDefault();
-        event.stopPropagation();
-
-        showToast(ToastUnableToLoadAttachment);
-      };
-
-      content = (
-        <video
-          className="Lightbox__object"
-          controls={false}
-          key={objectURL}
-          loop={false}
-          onClick={onLegacyClick}
-        >
-          <source src={objectURL} />
-        </video>
-      );
     } else if (isVideoTypeSupported) {
       const shouldLoop = loop || isAttachmentGIF || isViewOnce;
 
diff --git a/ts/components/conversation/GIF.tsx b/ts/components/conversation/GIF.tsx
index ceac789f7a0c..cab70bffb576 100644
--- a/ts/components/conversation/GIF.tsx
+++ b/ts/components/conversation/GIF.tsx
@@ -178,7 +178,7 @@ export const GIF: React.FC<Props> = props => {
   }
 
   let gif: JSX.Element | undefined;
-  if (isNotDownloaded || isPending || window.isLegacyOS()) {
+  if (isNotDownloaded || isPending) {
     gif = (
       <Blurhash
         hash={attachment.blurHash || defaultBlurHash(theme)}
diff --git a/ts/components/conversation/MessageAudio.tsx b/ts/components/conversation/MessageAudio.tsx
index 5edcef14fcfd..7a99b909cafc 100644
--- a/ts/components/conversation/MessageAudio.tsx
+++ b/ts/components/conversation/MessageAudio.tsx
@@ -6,7 +6,6 @@ import classNames from 'classnames';
 import { noop } from 'lodash';
 
 import { assert } from '../../util/assert';
-import { showToast } from '../../util/showToast';
 import type { LocalizerType } from '../../types/Util';
 import type { AttachmentType } from '../../types/Attachment';
 import { hasNotDownloaded } from '../../types/Attachment';
@@ -14,7 +13,6 @@ import type { DirectionType, MessageStatusType } from './Message';
 
 import type { ComputePeaksResult } from '../GlobalAudioContext';
 import { MessageMetadata } from './MessageMetadata';
-import { ToastUnableToLoadAttachment } from '../ToastUnableToLoadAttachment';
 import * as log from '../../logging/log';
 
 export type Props = {
@@ -352,11 +350,6 @@ export const MessageAudio: React.FC<Props> = (props: Props) => {
   }, [id, audio, isActive, isPlaying, currentTime]);
 
   const toggleIsPlaying = () => {
-    if (window.isLegacyOS()) {
-      showToast(ToastUnableToLoadAttachment);
-      return;
-    }
-
     setIsPlaying(!isPlaying);
 
     if (!isActive && !isPlaying) {
diff --git a/ts/window.d.ts b/ts/window.d.ts
index c5521257573f..636214f1aa4b 100644
--- a/ts/window.d.ts
+++ b/ts/window.d.ts
@@ -197,7 +197,6 @@ declare global {
     imageToBlurHash: typeof imageToBlurHash;
     loadImage: any;
     isBehindProxy: () => boolean;
-    isLegacyOS: () => boolean;
     getAutoLaunch: () => Promise<boolean>;
     setAutoLaunch: (value: boolean) => Promise<void>;
 
diff --git a/yarn.lock b/yarn.lock
index baf513f1e621..cbd3d0aff250 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5991,10 +5991,10 @@ electron-window@^0.8.0:
   dependencies:
     is-electron-renderer "^2.0.0"
 
-electron@16.0.4:
-  version "16.0.4"
-  resolved "https://registry.yarnpkg.com/electron/-/electron-16.0.4.tgz#87dfe21d17608537fc6df292c437362297566a73"
-  integrity sha512-IptwmowvMP1SFOmZLh6rrURwfnOxbDBXBRBcaOdfBM5I+B9mgtdNwzNC3ymFFNzEkZUwdOyg9fu3iyjAAQIQgw==
+electron@16.0.6:
+  version "16.0.6"
+  resolved "https://registry.yarnpkg.com/electron/-/electron-16.0.6.tgz#d7a420ef2cb39d7d0a4d8760c03d72b137a033d5"
+  integrity sha512-Xs9dYLYhcJf3wXn8m2gDqFTb1L862KEhMxOx9swfFBHj6NoUPPtUgw/RyPQ0tXN1XPxG9vnBkoI0BdcKwrLKuQ==
   dependencies:
     "@electron/get" "^1.13.0"
     "@types/node" "^14.6.2"