diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index 022b1f8..6294688 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -51,7 +51,8 @@
       {
         "ext": [
           "beam"
-        ]
+        ],
+        "mimeType": "application/lightningbeam"
       }
     ]
   }