diff --git a/.hgignore b/.hgignore
index af20adde..c5d9806d 100644
--- a/.hgignore
+++ b/.hgignore
@@ -6,6 +6,7 @@ syntax: glob
 **.mod.c
 **.o
 **.o.cmd
+**.swp
 .tmp_versions
 ChangeLog
 Doxyfile