diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index ef3b0968..6308fb34 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -2813,7 +2813,7 @@ RMarkdown:
   ace_mode: markdown
   extensions:
   - .rmd
-  tm_scope: none
+  tm_scope: source.gfm
 
 Racket:
   type: programming