diff --git a/grammars.yml b/grammars.yml
index a509a253..a1402e22 100644
--- a/grammars.yml
+++ b/grammars.yml
@@ -83,6 +83,8 @@ https://github.com/atom/language-csharp:
 - source.cs
 - source.csx
 - source.nant-build
+https://github.com/atom/language-gfm:
+- text.html.markdown
 https://github.com/atom/language-javascript:
 - source.js
 - source.js.regexp
@@ -325,8 +327,6 @@ https://github.com/textmate/lua.tmbundle:
 - source.lua
 https://github.com/textmate/make.tmbundle:
 - source.makefile
-https://github.com/textmate/markdown.tmbundle:
-- text.html.markdown
 https://github.com/textmate/matlab.tmbundle:
 - source.matlab
 - source.octave