diff --git a/package.json b/package.json
index fa00abd..c51f356 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
         "languages": [{
             "id": "opensips",
             "aliases": ["OpenSIPS", "opensips"],
-            "extensions": [".cfg",".cfg.m4"],
+            "extensions": [".cfg",".cfg.m4",".cfg.j2"],
             "configuration": "./language-configuration.json"
         }],
         "grammars": [{