diff --git a/.gitmodules b/.gitmodules
index 5839db6e..57cc914f 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -692,3 +692,6 @@
 [submodule "vendor/grammars/nesC"]
 	path = vendor/grammars/nesC
 	url = https://github.com/cdwilson/nesC.tmbundle
+[submodule "vendor/grammars/ats"]
+	path = vendor/grammars/ats
+	url = https://github.com/steinwaywhw/ats-mode-sublimetext
diff --git a/grammars.yml b/grammars.yml
index 0ee0c32d..61a3d1d1 100755
--- a/grammars.yml
+++ b/grammars.yml
@@ -183,6 +183,8 @@ vendor/grammars/atom-language-stan/:
 vendor/grammars/atom-salt:
 - source.python.salt
 - source.yaml.salt
+vendor/grammars/ats:
+- source.ats
 vendor/grammars/awk-sublime:
 - source.awk
 vendor/grammars/bison.tmbundle:
diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index a93edfd0..b7f46155 100755
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -105,7 +105,7 @@ ATS:
   - .dats
   - .hats
   - .sats
-  tm_scope: none
+  tm_scope: source.ats
   ace_mode: ocaml
 
 ActionScript:
diff --git a/vendor/grammars/ats b/vendor/grammars/ats
new file mode 160000
index 00000000..b4f5a7a9
--- /dev/null
+++ b/vendor/grammars/ats
@@ -0,0 +1 @@
+Subproject commit b4f5a7a9ceaf257ada89cb1068fb170db51cd426
diff --git a/vendor/licenses/grammar/ats.txt b/vendor/licenses/grammar/ats.txt
new file mode 100644
index 00000000..b771bd5c
--- /dev/null
+++ b/vendor/licenses/grammar/ats.txt
@@ -0,0 +1,26 @@
+---
+type: grammar
+name: ats
+license: mit
+---
+The MIT License (MIT)
+
+Copyright (c) 2016 Hanwen (Steinway) Wu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.