diff --git a/.gitmodules b/.gitmodules
index 298eae72..921785c4 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -704,3 +704,6 @@
 [submodule "vendor/grammars/idris"]
 	path = vendor/grammars/idris
 	url = https://github.com/idris-hackers/idris-sublime.git
+[submodule "vendor/grammars/atomic-dreams"]
+	path = vendor/grammars/atomic-dreams
+	url = https://github.com/PJB3005/atomic-dreams
diff --git a/grammars.yml b/grammars.yml
index b6242fc1..4d4b9d4b 100755
--- a/grammars.yml
+++ b/grammars.yml
@@ -183,6 +183,9 @@ vendor/grammars/atom-language-stan/:
 vendor/grammars/atom-salt:
 - source.python.salt
 - source.yaml.salt
+vendor/grammars/atomic-dreams/:
+- source.dm
+- source.dmf
 vendor/grammars/ats:
 - source.ats
 vendor/grammars/awk-sublime:
diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index e807f9e1..c580fcf2 100755
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -772,7 +772,7 @@ DM:
   - .dm
   aliases:
   - byond
-  tm_scope: source.c++
+  tm_scope: source.dm
   ace_mode: c_cpp
 
 DNS Zone:
diff --git a/vendor/grammars/atomic-dreams b/vendor/grammars/atomic-dreams
new file mode 160000
index 00000000..4384f94f
--- /dev/null
+++ b/vendor/grammars/atomic-dreams
@@ -0,0 +1 @@
+Subproject commit 4384f94ff33004281d13353369a0478e28a2f479
diff --git a/vendor/licenses/grammar/atomic-dreams.txt b/vendor/licenses/grammar/atomic-dreams.txt
new file mode 100644
index 00000000..3905f737
--- /dev/null
+++ b/vendor/licenses/grammar/atomic-dreams.txt
@@ -0,0 +1,14 @@
+---
+type: grammar
+name: atomic-dreams
+license: mit
+curated: true
+---
+
+Copyright (c) 2016 Pieter-Jan Briers, Kyle J. Kemp
+
+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.