diff --git a/kitty/guess_mime_type.py b/kitty/guess_mime_type.py
index 8d2c1f81c..9a26517ed 100644
--- a/kitty/guess_mime_type.py
+++ b/kitty/guess_mime_type.py
@@ -36,6 +36,8 @@ text_mimes = (
     'application/toml',
     'application/rss+xml',
     'application/xhtml+xml',
+    'application/x-tex',
+    'application/x-latex',
 )