diff --git a/.gitignore b/.gitignore
index ca65fb5d5..719a10777 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,6 +22,8 @@ catc0
 catm
 gmon.out
 *.o
+.swp
+.swo
 .*.swp
 .*.swo
 c/dsls/lemon