diff --git a/filetypes.xml b/filetypes.xml
index 44bc80a..38e84be 100644
--- a/filetypes.xml
+++ b/filetypes.xml
@@ -4,6 +4,7 @@
     <extensionMap>
       <mapping pattern="wordlist.json" type="JSON" />
       <mapping pattern=".env" type="PLAIN_TEXT" />
+      <mapping ext="bak" type="PLAIN_TEXT" />
       <mapping ext="toml" type="PLAIN_TEXT" />
       <mapping ext="min" type="PLAIN_TEXT" />
       <mapping ext="mysql" type="SQL" />