diff --git a/.hgignore b/.hgignore
index 2bdc281..4482266 100644
--- a/.hgignore
+++ b/.hgignore
@@ -13,3 +13,8 @@ callgrind.out.*
 *.~*
 *.pdf
 *.*\#
+ctags
+cscope
+.ctags
+.cscope
+