diff --git a/.gitignore b/.gitignore
index 99216d4..356691a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,7 +41,7 @@ src/in.h
 src/out.c
 src/out.h
 build[89]
-build1[01]
+build1[012]
 buildroot/
 work/
 all