diff --git a/contrib/svn-fe/svn-fe.txt b/contrib/svn-fe/svn-fe.txt
index 35f84bd9e7577b58bc9905c8b46806bfb37963ff..cd075b96c54419fdaa25c56b24133dd080f440ca 100644
--- a/contrib/svn-fe/svn-fe.txt
+++ b/contrib/svn-fe/svn-fe.txt
@@ -18,6 +18,9 @@ Subversion repository mirrored on the local disk. Remote Subversion
 repositories can be mirrored on local disk using the `svnsync`
 command.
 
+Note: this tool is very young.  The details of its commandline
+interface may change in backward incompatible ways.
+
 INPUT FORMAT
 ------------
 Subversion's repository dump format is documented in full in