diff --git a/deno.json b/deno.json
index e40dd24..54ba468 100644
--- a/deno.json
+++ b/deno.json
@@ -32,7 +32,7 @@
     "@std/dotenv": "jsr:@std/dotenv@^0.224.0",
     "@std/encoding": "jsr:@std/encoding@^0.224.0",
     "@std/json": "jsr:@std/json@^0.223.0",
-    "@std/media-types": "jsr:@std/media-types@^0.224.0",
+    "@std/media-types": "jsr:@std/media-types@^0.224.1",
     "@std/streams": "jsr:@std/streams@^0.223.0",
     "comlink": "npm:comlink@^4.4.1",
     "deno-safe-fetch": "https://gitlab.com/soapbox-pub/deno-safe-fetch/-/raw/v1.0.0/load.ts",
diff --git a/src/deps.ts b/src/deps.ts
index 46d8fec..12be07f 100644
--- a/src/deps.ts
+++ b/src/deps.ts
@@ -1,8 +1,6 @@
 import 'deno-safe-fetch';
 // @deno-types="npm:@types/lodash@4.14.194"
 export { default as lodash } from 'https://esm.sh/lodash@4.17.21';
-// @deno-types="npm:@types/mime@3.0.0"
-export { default as mime } from 'npm:mime@^3.0.0';
 // @deno-types="npm:@types/sanitize-html@2.9.0"
 export { default as sanitizeHtml } from 'npm:sanitize-html@^2.11.0';
 export {
diff --git a/src/note.ts b/src/note.ts
index 1c5c70c..7dc39f5 100644
--- a/src/note.ts
+++ b/src/note.ts
@@ -1,10 +1,10 @@
+import { typeByExtension } from '@std/media-types';
 import 'linkify-plugin-hashtag';
 import linkifyStr from 'linkify-string';
 import linkify from 'linkifyjs';
 import { nip19, nip21 } from 'nostr-tools';
 
 import { Conf } from '@/config.ts';
-import { mime } from '@/deps.ts';
 import { type DittoAttachment } from '@/views/mastodon/attachments.ts';
 
 linkify.registerCustomProtocol('nostr', true);
@@ -87,12 +87,13 @@ function isLinkURL(link: Link): boolean {
   return link.type === 'url';
 }
 
-/** `npm:mime` treats `.com` as a file extension, so parse the full URL to get its path first. */
+/** Get the extension from the URL, then get its type. */
 function getUrlMimeType(url: string): string | undefined {
   try {
     const { pathname } = new URL(url);
-    return mime.getType(pathname) || undefined;
-  } catch (_e) {
+    const ext = pathname.split('.').pop() ?? '';
+    return typeByExtension(ext);
+  } catch {
     return undefined;
   }
 }