diff --git a/filetypes.xml b/filetypes.xml
index 1dbaebb..6be3c04 100644
--- a/filetypes.xml
+++ b/filetypes.xml
@@ -4,6 +4,7 @@
       <mapping ext="svga" type="JSON" />
       <mapping pattern="mcp.json" type="JSON5" />
       <mapping ext="csv" type="PLAIN_TEXT" />
+      <mapping ext="bak" type="PLAIN_TEXT" />
       <mapping ext="stl" type="PLAIN_TEXT" />
       <mapping ext="obj" type="PLAIN_TEXT" />
       <mapping ext="mtl" type="PLAIN_TEXT" />