diff --git a/grammars.yml b/grammars.yml
index e8ad6594..f7d33fff 100644
--- a/grammars.yml
+++ b/grammars.yml
@@ -242,6 +242,7 @@ https://github.com/textmate/bison.tmbundle:
 https://github.com/textmate/c.tmbundle:
 - source.c
 - source.c++
+- source.c.platform
 https://github.com/textmate/capnproto.tmbundle:
 - source.capnp
 https://github.com/textmate/cmake.tmbundle:
@@ -327,6 +328,7 @@ https://github.com/textmate/ninja.tmbundle:
 https://github.com/textmate/objective-c.tmbundle:
 - source.objc
 - source.objc++
+- source.objc.platform
 - source.strings
 https://github.com/textmate/ocaml.tmbundle:
 - source.camlp4.ocaml