diff --git a/.unison/default.prf b/.unison/default.prf
index 0621718..03d5193 100644
--- a/.unison/default.prf
+++ b/.unison/default.prf
@@ -19,6 +19,7 @@ ignore = Name lib
 
 # Ignore list files
 ignore = Name *.synctex.gz
+ignore = Name *.tns
 ignore = Name *.toc
 ignore = Name *.log
 ignore = Name *.loa