diff --git a/README b/README
new file mode 100644
index 0000000..616a2dc
--- /dev/null
+++ b/README
@@ -0,0 +1,5 @@
+For the Debian packages released on the website, a chroot environment is
+built using an old version of Debian (Sarge).  As all the packages used are
+backwards-compatible, the package will work on any recent versions
+of Debian or distributions derived from it (Ubuntu, etc).
+
diff --git a/build-sarge b/build-chroot
similarity index 100%
rename from build-sarge
rename to build-chroot