diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index 220b37173e..3af6d03eac 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -2371,7 +2371,7 @@ au BufNewFile,BufRead *.sml			setf sml
 au BufNewFile,BufRead *.cm			setf voscm
 
 " Swift
-au BufNewFile,BufRead *.swift			setf swift
+au BufNewFile,BufRead *.swift,*.swiftinterface	setf swift
 au BufNewFile,BufRead *.swift.gyb		setf swiftgyb
 
 " Swift Intermediate Language or SILE
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 1e6c39ed99..c10023d94c 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -712,7 +712,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     svg: ['file.svg'],
     svn: ['svn-commitfile.tmp', 'svn-commit-file.tmp', 'svn-commit.tmp'],
     swayconfig: ['/home/user/.sway/config', '/home/user/.config/sway/config', '/etc/sway/config', '/etc/xdg/sway/config'],
-    swift: ['file.swift'],
+    swift: ['file.swift', 'file.swiftinterface'],
     swiftgyb: ['file.swift.gyb'],
     swig: ['file.swg', 'file.swig'],
     sysctl: ['/etc/sysctl.conf', '/etc/sysctl.d/file.conf', 'any/etc/sysctl.conf', 'any/etc/sysctl.d/file.conf'],
diff --git a/src/version.c b/src/version.c
index c8c0caf59b..62b2ab55c4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    725,
 /**/
     724,
 /**/