diff --git a/.gitattributes b/.gitattributes
index 5e568606e..4747c6a8c 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,4 @@
 *.v linguist-language=Verilog
 /.gitcommit export-subst
+
+*.ys text eol=lf
diff --git a/tests/techmap/breakreduce.ys b/tests/techmap/breakreduce.ys
index c43e045dd..a7e3e8b71 100644
Binary files a/tests/techmap/breakreduce.ys and b/tests/techmap/breakreduce.ys differ