diff --git a/languages.toml b/languages.toml
index b6f939aad..323835132 100644
--- a/languages.toml
+++ b/languages.toml
@@ -717,6 +717,7 @@ source = { git = "https://github.com/tree-sitter/tree-sitter-ocaml", rev = "23d4
 
 [[language]]
 name = "lua"
+injection-regex = "lua"
 scope = "source.lua"
 file-types = ["lua"]
 shebangs = ["lua"]