diff --git a/languages.toml b/languages.toml
index c3bb1de..2018efe 100644
--- a/languages.toml
+++ b/languages.toml
@@ -5,3 +5,5 @@ indent = { unit = "    ", tab-width = 4 }
 [[language]]
 name = "cpp"
 indent = { unit = "    ", tab-width = 4 }
+file-types = ["cpp", "h", "hpp", "inc"]
+