diff --git a/.gitignore b/.gitignore
index 70501e2..57db110 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 *.log
 geojson/*
 output.*
+tmp/
diff --git a/.hgignore b/.hgignore
index 363c7ff..6a3efcb 100644
--- a/.hgignore
+++ b/.hgignore
@@ -5,3 +5,4 @@
 *.dvi
 *.log
 output.*
+tmp/