Update runtime files.
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 79b62e9..94491d5 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -22,6 +22,7 @@
 runtime/autoload/xmlformat.vim		@chrisbra
 runtime/autoload/zip.vim		@cecamp
 runtime/compiler/checkstyle.vim		@dkearns
+runtime/compiler/cm3.vim		@dkearns
 runtime/compiler/cucumber.vim		@tpope
 runtime/compiler/dart.vim		@dkearns
 runtime/compiler/dart2js.vim		@dkearns
@@ -90,8 +91,11 @@
 runtime/ftplugin/javascriptreact.vim	@dkearns
 runtime/ftplugin/kconfig.vim		@chrisbra
 runtime/ftplugin/liquid.vim		@tpope
+runtime/ftplugin/m3build.vim		@dkearns
+runtime/ftplugin/m3quake.vim		@dkearns
 runtime/ftplugin/markdown.vim		@tpope
 runtime/ftplugin/matlab.vim		@cecamp
+runtime/ftplugin/modula3.vim		@dkearns
 runtime/ftplugin/nroff.vim		@a-vrma
 runtime/ftplugin/nsis.vim		@k-takata
 runtime/ftplugin/pdf.vim		@tpope
@@ -167,10 +171,13 @@
 runtime/syntax/liquid.vim		@tpope
 runtime/syntax/lisp.vim			@cecamp
 runtime/syntax/lynx.vim			@dkearns
+runtime/syntax/m3build.vim		@dkearns
+runtime/syntax/m3quake.vim		@dkearns
 runtime/syntax/mailcap.vim		@dkearns
 runtime/syntax/make.vim			@rohieb
 runtime/syntax/maple.vim		@cecamp
 runtime/syntax/markdown.vim		@tpope
+runtime/syntax/modula3.vim		@dkearns
 runtime/syntax/netrw.vim		@cecamp
 runtime/syntax/nroff.vim		@jmarshall
 runtime/syntax/nsis.vim			@k-takata