diff --git a/Doc/whatsnew/3.15.rst b/Doc/whatsnew/3.15.rst
index 6f5d84a3b8ca80..fecc87ceaf19d9 100644
--- a/Doc/whatsnew/3.15.rst
+++ b/Doc/whatsnew/3.15.rst
@@ -867,8 +867,12 @@ mimetypes
   - ``application/vnd.ms-cab-compressed`` for ``.cab`` extension
   - ``application/vnd.ms-htmlhelp`` for ``.chm`` extension
   - ``application/vnd.ms-officetheme`` for ``.thmx`` extension
+  - ``font/collection`` for ``.ttc`` extension
+  - ``haptics/ivs`` for ``.ivs`` extension
+  - ``haptics/hjif`` for ``.hjif`` extension
+  - ``haptics/hmpg`` for ``.hmpg`` extension
 
-  (Contributed by Charlie Lin in :gh:`145718`.)
+  (Contributed by Charlie Lin in :gh:`145718` and :gh:`145918`.)
 
 * Add ``image/jxl``. (Contributed by Foolbar in :gh:`144213`.)
 * Rename ``application/x-texinfo`` to ``application/texinfo``.
diff --git a/Lib/mimetypes.py b/Lib/mimetypes.py
index a834826114614d..ad18db09f6b340 100644
--- a/Lib/mimetypes.py
+++ b/Lib/mimetypes.py
@@ -599,10 +599,14 @@ def _default_mime_types():
         '.ra'     : 'audio/x-pn-realaudio',
         '.wav'    : 'audio/vnd.wave',
         '.weba'   : 'audio/webm',
+        '.ttc'    : 'font/collection',
         '.otf'    : 'font/otf',
         '.ttf'    : 'font/ttf',
         '.woff'   : 'font/woff',
         '.woff2'  : 'font/woff2',
+        '.hjif'   : 'haptics/hjif',
+        '.hmpg'   : 'haptics/hmpg',
+        '.ivs'    : 'haptics/ivs',
         '.avif'   : 'image/avif',
         '.bmp'    : 'image/bmp',
         '.emf'    : 'image/emf',
diff --git a/Misc/NEWS.d/next/Library/2026-03-13-14-23-33.gh-issue-145917.TooGKx.rst b/Misc/NEWS.d/next/Library/2026-03-13-14-23-33.gh-issue-145917.TooGKx.rst
new file mode 100644
index 00000000000000..d40c6bdec90fe9
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-03-13-14-23-33.gh-issue-145917.TooGKx.rst
@@ -0,0 +1,8 @@
+Add the following to ``mimetypes``:
+
+  - ``font/collection``
+  - ``haptics/ivs``
+  - ``haptics/hjif``
+  - ``haptics/hmpg``
+
+(Contributed by Charlie Lin in :gh:`145918`.)