diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index eef8bdb9..12108b50 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -933,11 +933,11 @@ TeX:
   extensions:
   - .aux
   - .cls
+  - .dtx
+  - .ins
   - .sty
   - .tex
   - .toc
-  - .dtx
-  - .ins
 
 Text:
   type: data