diff --git a/bin/README.md b/bin/README.md
index 017220314..72e8a286a 100644
--- a/bin/README.md
+++ b/bin/README.md
@@ -457,6 +457,10 @@ These are some official and third-party add-ons you can install as compiled prog
 
 [hledger-interest](https://hackage.haskell.org/package/hledger-interest) generates interest transactions.
 
+Notes (as of 1.6.7):
+
+- Use the README at https://github.com/peti/hledger-interest, it's better than the command line help or hackage description.
+- It silently ignores $LEDGER_FILE, so be sure to provide a file name with -f.
 
 ### Other