diff --git a/package.json b/package.json
index a32195395..da4c23f24 100644
--- a/package.json
+++ b/package.json
@@ -83,7 +83,6 @@
     "exception-reporting": "0.5.0",
     "find-and-replace": "0.33.0",
     "fuzzy-finder": "0.15.0",
-    "gfm": "0.5.0",
     "gists": "0.6.0",
     "git-diff": "0.13.0",
     "github-sign-in": "0.9.0",
@@ -91,7 +90,7 @@
     "grammar-selector": "0.8.0",
     "image-view": "0.7.0",
     "link": "0.7.0",
-    "markdown-preview": "0.12.0",
+    "markdown-preview": "0.13.0",
     "metrics": "0.8.0",
     "package-generator": "0.14.0",
     "release-notes": "0.11.0",
@@ -105,16 +104,16 @@
     "terminal": "0.15.0",
     "timecop": "0.9.0",
     "to-the-hubs": "0.8.0",
-    "toml": "0.3.0",
     "tree-view": "0.22.0",
     "visual-bell": "0.3.0",
-    "whitespace": "0.7.0",
+    "whitespace": "0.8.0",
     "wrap-guide": "0.4.0",
 
     "language-c": "0.2.0",
     "language-clojure": "0.1.0",
     "language-coffee-script": "0.1.0",
     "language-css": "0.2.0",
+    "language-gfm": "0.8.0",
     "language-git": "0.2.0",
     "language-go": "0.2.0",
     "language-html": "0.2.0",
@@ -140,6 +139,7 @@
     "language-sql": "0.2.0",
     "language-text": "0.2.0",
     "language-todo": "0.2.0",
+    "language-toml": "0.6.0",
     "language-xml": "0.2.0",
     "language-yaml": "0.1.0"
   },
diff --git a/src/text-mate-package.coffee b/src/text-mate-package.coffee
index 0ab3500b3..04d7386bf 100644
--- a/src/text-mate-package.coffee
+++ b/src/text-mate-package.coffee
@@ -51,7 +51,7 @@ class TextMatePackage extends Package
     syntax.removeGrammar(grammar) for grammar in @grammars
     syntax.removeProperties(@path)
 
-  legalGrammarExtensions: ['plist', 'tmLanguage', 'tmlanguage', 'json']
+  legalGrammarExtensions: ['plist', 'tmLanguage', 'tmlanguage', 'json', 'cson']
 
   loadGrammars: (done) ->
     fsUtils.isDirectory @getSyntaxesPath(), (isDirectory) =>