diff --git a/.hgignore b/.hgignore
new file mode 100644
index 0000000..b7ac9b3
--- /dev/null
+++ b/.hgignore
@@ -0,0 +1,7 @@
+(^|/)CVS($|/)
+(^|/)\.hg($|/)
+(^|/)\.hgtags($|/)
+^plan9.log$
+^state$
+^state.old$
+^state.journal$