diff --git a/lib/constants.js b/lib/constants.js
index edcb79d20..3bfa00262 100644
--- a/lib/constants.js
+++ b/lib/constants.js
@@ -980,6 +980,11 @@ export const LANGUAGES = [
     mode: 'swift',
     highlight: true,
   },
+  {
+    name: 'Terraform',
+    mode: 'terraform',
+    highlight: true,
+  },
   {
     name: 'TCL',
     mode: 'tcl',