diff --git a/Lib/mimetypes.py b/Lib/mimetypes.py
index f6c43b3b92bc50..3224363a3f2bfb 100644
--- a/Lib/mimetypes.py
+++ b/Lib/mimetypes.py
@@ -427,8 +427,8 @@ def _default_mime_types():
     # Make sure the entry with the preferred file extension for a particular mime type
     # appears before any others of the same mimetype.
     types_map = _types_map_default = {
-        '.js'     : 'application/javascript',
-        '.mjs'    : 'application/javascript',
+        '.js'     : 'text/javascript',
+        '.mjs'    : 'text/javascript',
         '.json'   : 'application/json',
         '.webmanifest': 'application/manifest+json',
         '.doc'    : 'application/msword',
diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-05-10-14-52-29.gh-issue-92626._qhwB8.rst b/Misc/NEWS.d/next/Core and Builtins/2022-05-10-14-52-29.gh-issue-92626._qhwB8.rst
new file mode 100644
index 00000000000000..4979c9e6a767ae
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2022-05-10-14-52-29.gh-issue-92626._qhwB8.rst	
@@ -0,0 +1 @@
+Correct JavaScript MIME types + extensions per RFC 9239