diff --git a/.changeset/wicked-humans-hang.md b/.changeset/wicked-humans-hang.md
new file mode 100644
index 0000000000000..e793bc978902d
--- /dev/null
+++ b/.changeset/wicked-humans-hang.md
@@ -0,0 +1,5 @@
+---
+"@rocket.chat/meteor": patch
+---
+
+Improve cache of static files
diff --git a/apps/meteor/app/cors/server/cors.ts b/apps/meteor/app/cors/server/cors.ts
index 03a42e45a17bb..cb6fa94273a28 100644
--- a/apps/meteor/app/cors/server/cors.ts
+++ b/apps/meteor/app/cors/server/cors.ts
@@ -1,4 +1,6 @@
+import { createHash } from 'crypto';
 import type http from 'http';
+import type { UrlWithParsedQuery } from 'url';
 import url from 'url';
 
 import { Logger } from '@rocket.chat/logger';
@@ -77,6 +79,19 @@ WebApp.rawConnectHandlers.use((_req: http.IncomingMessage, res: http.ServerRespo
 });
 
 const _staticFilesMiddleware = WebAppInternals.staticFilesMiddleware;
+declare module 'meteor/webapp' {
+	// eslint-disable-next-line @typescript-eslint/no-namespace
+	namespace WebApp {
+		function categorizeRequest(
+			req: http.IncomingMessage,
+		): { arch: string; path: string; url: UrlWithParsedQuery } & Record<string, unknown>;
+	}
+}
+
+// These routes already handle cache control on their own
+const cacheControlledRoutes: Array<RegExp> = ['/assets', '/custom-sounds', '/emoji-custom', '/avatar', '/file-upload'].map(
+	(route) => new RegExp(`^${route}`, 'i'),
+);
 
 // @ts-expect-error - accessing internal property of webapp
 WebAppInternals.staticFilesMiddleware = function (
@@ -86,6 +101,32 @@ WebAppInternals.staticFilesMiddleware = function (
 	next: NextFunction,
 ) {
 	res.setHeader('Access-Control-Allow-Origin', '*');
+	const { arch, path, url } = WebApp.categorizeRequest(req);
+
+	if (Meteor.isProduction && !cacheControlledRoutes.some((regexp) => regexp.test(path))) {
+		res.setHeader('Cache-Control', 'public, max-age=31536000');
+	}
+
+	// Prevent meteor_runtime_config.js to load from a different expected hash possibly causing
+	// a cache of the file for the wrong hash and start a client loop due to the mismatch
+	// of the hashes of ui versions which would be checked against a websocket response
+	if (path === '/meteor_runtime_config.js') {
+		const program = WebApp.clientPrograms[arch] as (typeof WebApp.clientPrograms)[string] & {
+			meteorRuntimeConfigHash?: string;
+			meteorRuntimeConfig: string;
+		};
+
+		if (!program?.meteorRuntimeConfigHash) {
+			program.meteorRuntimeConfigHash = createHash('sha1')
+				.update(JSON.stringify(encodeURIComponent(program.meteorRuntimeConfig)))
+				.digest('hex');
+		}
+
+		if (program.meteorRuntimeConfigHash !== url.query.hash) {
+			res.writeHead(404);
+			return res.end();
+		}
+	}
 	return _staticFilesMiddleware(staticFiles, req, res, next);
 };
 
diff --git a/apps/meteor/app/custom-sounds/client/lib/CustomSounds.ts b/apps/meteor/app/custom-sounds/client/lib/CustomSounds.ts
index a4f59136a1f9f..f881c15f98867 100644
--- a/apps/meteor/app/custom-sounds/client/lib/CustomSounds.ts
+++ b/apps/meteor/app/custom-sounds/client/lib/CustomSounds.ts
@@ -7,21 +7,22 @@ import { getURL } from '../../../utils/client';
 import { sdk } from '../../../utils/client/lib/SDKClient';
 
 const getCustomSoundId = (soundId: ICustomSound['_id']) => `custom-sound-${soundId}`;
+const getAssetUrl = (asset: string, params?: Record<string, any>) => getURL(asset, params, undefined, true);
 
 const defaultSounds = [
-	{ _id: 'chime', name: 'Chime', extension: 'mp3', src: getURL('sounds/chime.mp3') },
-	{ _id: 'door', name: 'Door', extension: 'mp3', src: getURL('sounds/door.mp3') },
-	{ _id: 'beep', name: 'Beep', extension: 'mp3', src: getURL('sounds/beep.mp3') },
-	{ _id: 'chelle', name: 'Chelle', extension: 'mp3', src: getURL('sounds/chelle.mp3') },
-	{ _id: 'ding', name: 'Ding', extension: 'mp3', src: getURL('sounds/ding.mp3') },
-	{ _id: 'droplet', name: 'Droplet', extension: 'mp3', src: getURL('sounds/droplet.mp3') },
-	{ _id: 'highbell', name: 'Highbell', extension: 'mp3', src: getURL('sounds/highbell.mp3') },
-	{ _id: 'seasons', name: 'Seasons', extension: 'mp3', src: getURL('sounds/seasons.mp3') },
-	{ _id: 'telephone', name: 'Telephone', extension: 'mp3', src: getURL('sounds/telephone.mp3') },
-	{ _id: 'outbound-call-ringing', name: 'Outbound Call Ringing', extension: 'mp3', src: getURL('sounds/outbound-call-ringing.mp3') },
-	{ _id: 'call-ended', name: 'Call Ended', extension: 'mp3', src: getURL('sounds/call-ended.mp3') },
-	{ _id: 'dialtone', name: 'Dialtone', extension: 'mp3', src: getURL('sounds/dialtone.mp3') },
-	{ _id: 'ringtone', name: 'Ringtone', extension: 'mp3', src: getURL('sounds/ringtone.mp3') },
+	{ _id: 'chime', name: 'Chime', extension: 'mp3', src: getAssetUrl('sounds/chime.mp3') },
+	{ _id: 'door', name: 'Door', extension: 'mp3', src: getAssetUrl('sounds/door.mp3') },
+	{ _id: 'beep', name: 'Beep', extension: 'mp3', src: getAssetUrl('sounds/beep.mp3') },
+	{ _id: 'chelle', name: 'Chelle', extension: 'mp3', src: getAssetUrl('sounds/chelle.mp3') },
+	{ _id: 'ding', name: 'Ding', extension: 'mp3', src: getAssetUrl('sounds/ding.mp3') },
+	{ _id: 'droplet', name: 'Droplet', extension: 'mp3', src: getAssetUrl('sounds/droplet.mp3') },
+	{ _id: 'highbell', name: 'Highbell', extension: 'mp3', src: getAssetUrl('sounds/highbell.mp3') },
+	{ _id: 'seasons', name: 'Seasons', extension: 'mp3', src: getAssetUrl('sounds/seasons.mp3') },
+	{ _id: 'telephone', name: 'Telephone', extension: 'mp3', src: getAssetUrl('sounds/telephone.mp3') },
+	{ _id: 'outbound-call-ringing', name: 'Outbound Call Ringing', extension: 'mp3', src: getAssetUrl('sounds/outbound-call-ringing.mp3') },
+	{ _id: 'call-ended', name: 'Call Ended', extension: 'mp3', src: getAssetUrl('sounds/call-ended.mp3') },
+	{ _id: 'dialtone', name: 'Dialtone', extension: 'mp3', src: getAssetUrl('sounds/dialtone.mp3') },
+	{ _id: 'ringtone', name: 'Ringtone', extension: 'mp3', src: getAssetUrl('sounds/ringtone.mp3') },
 ];
 
 class CustomSoundsClass {
@@ -85,7 +86,7 @@ class CustomSoundsClass {
 	}
 
 	getURL(sound: ICustomSound) {
-		return getURL(`/custom-sounds/${sound._id}.${sound.extension}?_dc=${sound.random || 0}`);
+		return getAssetUrl(`/custom-sounds/${sound._id}.${sound.extension}`, { _dc: sound.random || 0 });
 	}
 
 	getList() {
diff --git a/apps/meteor/app/ui-master/server/inject.ts b/apps/meteor/app/ui-master/server/inject.ts
index 78112bcee343f..1e00a0e47433f 100644
--- a/apps/meteor/app/ui-master/server/inject.ts
+++ b/apps/meteor/app/ui-master/server/inject.ts
@@ -32,7 +32,7 @@ const callback: NextHandleFunction = (req, res, next) => {
 			return;
 		}
 
-		const injection = headInjections.get(pathname.replace(/^\//, '')) as Injection | undefined;
+		const injection = headInjections.get(pathname.replace(/^\//, '').split('_')[0]) as Injection | undefined;
 
 		if (!injection || typeof injection === 'string') {
 			next();
@@ -76,27 +76,37 @@ export const injectIntoHead = (key: string, value: Injection): void => {
 };
 
 export const addScript = (key: string, content: string): void => {
+	if (/_/.test(key)) {
+		throw new Error('inject.js > addScript - key cannot contain "_" (underscore)');
+	}
+
 	if (!content.trim()) {
-		injectIntoHead(`${key}.js`, '');
+		injectIntoHead(key, '');
 		return;
 	}
 	const currentHash = crypto.createHash('sha1').update(content).digest('hex');
-	injectIntoHead(`${key}.js`, {
+
+	injectIntoHead(key, {
 		type: 'JS',
-		tag: `<script id="${key}" type="text/javascript" src="${`${getURL(key)}.js?${currentHash}`}"></script>`,
+		tag: `<script id="${key}" type="text/javascript" src="${`${getURL(key)}_${currentHash}.js`}"></script>`,
 		content,
 	});
 };
 
 export const addStyle = (key: string, content: string): void => {
+	if (/_/.test(key)) {
+		throw new Error('inject.js > addStyle - key cannot contain "_" (underscore)');
+	}
+
 	if (!content.trim()) {
-		injectIntoHead(`${key}.css`, '');
+		injectIntoHead(key, '');
 		return;
 	}
 	const currentHash = crypto.createHash('sha1').update(content).digest('hex');
-	injectIntoHead(`${key}.css`, {
+
+	injectIntoHead(key, {
 		type: 'CSS',
-		tag: `<link id="${key}" rel="stylesheet" type="text/css" href="${`${getURL(key)}.css?${currentHash}`}">`,
+		tag: `<link id="${key}" rel="stylesheet" type="text/css" href="${`${getURL(key)}_${currentHash}.css`}">`,
 		content,
 	});
 };
diff --git a/apps/meteor/app/utils/client/getURL.ts b/apps/meteor/app/utils/client/getURL.ts
index 91ef0989bd190..040b6dfa9dc28 100644
--- a/apps/meteor/app/utils/client/getURL.ts
+++ b/apps/meteor/app/utils/client/getURL.ts
@@ -1,13 +1,19 @@
 import { settings } from '../../settings/client';
 import { getURLWithoutSettings } from '../lib/getURL';
+import { Info } from '../rocketchat.info';
 
 export const getURL = function (
 	path: string, // eslint-disable-next-line @typescript-eslint/naming-convention
 	params: Record<string, any> = {},
 	cloudDeepLinkUrl?: string,
+	cacheKey?: boolean,
 ): string {
 	const cdnPrefix = settings.get('CDN_PREFIX') || '';
 	const siteUrl = settings.get('Site_Url') || '';
 
+	if (cacheKey) {
+		path += `${path.includes('?') ? '&' : '?'}cacheKey=${Info.version}`;
+	}
+
 	return getURLWithoutSettings(path, params, cdnPrefix, siteUrl, cloudDeepLinkUrl);
 };