diff --git a/.hgignore b/.hgignore
index 821ac83..880040b 100644
--- a/.hgignore
+++ b/.hgignore
@@ -1,3 +1,6 @@
 syntax: glob
 
-.DS_Store
\ No newline at end of file
+.DS_Store
+
+syntax: regexp
+system/cache/(?!index\.html|\.htaccess)
\ No newline at end of file