diff --git a/.hgignore b/.hgignore
index af20adde0827c23b02921f20d8b3967ad7175288..c5d9806db6480e7ff3f884fbcbd7bd2729ceb559 100644
--- a/.hgignore
+++ b/.hgignore
@@ -6,6 +6,7 @@ syntax: glob
 **.mod.c
 **.o
 **.o.cmd
+**.swp
 .tmp_versions
 ChangeLog
 Doxyfile