diff --git a/syntaxes/cpp.tmLanguage.json b/syntaxes/cpp.tmLanguage.json
index 86931046..61b91ef8 100644
--- a/syntaxes/cpp.tmLanguage.json
+++ b/syntaxes/cpp.tmLanguage.json
@@ -10,6 +10,7 @@
   "fileTypes": [
     "cc",
     "cpp",
+    "cppm",
     "cp",
     "cxx",
     "c++",
@@ -19999,4 +20000,4 @@
       ]
     }
   }
-}
\ No newline at end of file
+}