diff --git a/runtime/syntax/markdown.yaml b/runtime/syntax/markdown.yaml
index bcf629d7..7ea4326c 100644
--- a/runtime/syntax/markdown.yaml
+++ b/runtime/syntax/markdown.yaml
@@ -1,7 +1,7 @@
 filetype: markdown
 
 detect:
-    filename: "\\.(md|mkd|mkdn|markdown)$"
+    filename: "\\.(livemd|md|mkd|mkdn|markdown)$"
 
 rules:
     # Tables (Github extension)