diff --git a/.hgignore b/.hgignore
new file mode 100644
index 000000000..d8fea0b6d
--- /dev/null
+++ b/.hgignore
@@ -0,0 +1,5 @@
+syntax: regexp
+\.a?[12578vqki]?$
+^(dev|fd|net|srv|env|root|mnt|n)/
+^(386|68000|68020|alpha|amd64|arm|power|power64|sparc|sparc64)/(bin|lib)/
+^acme/bin/(386|68000|68020|alpha|amd64|arm|power|power64|sparc|sparc64)/