diff --git a/.gitignore b/.gitignore
index eed464b0..3c51a758 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,6 +46,7 @@ lib/chibi/filesystem.c
 lib/chibi/io/io.c
 lib/chibi/net.c
 lib/chibi/process.c
+lib/chibi/pty.c
 lib/chibi/stty.c
 lib/chibi/system.c
 lib/chibi/time.c