diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index d1682086..fbde5cdc 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1400,6 +1400,7 @@ XML:
   - .xaml
   - .xlf
   - .xliff
+  - .xmi
   - .xsd
   - .xul
   - .zcml