diff --git a/index.html b/index.html
index 8c964ed..9a8b863 100644
--- a/index.html
+++ b/index.html
@@ -449,6 +449,7 @@ other console/curses tools
 <li><a href="https://docs.google.com/document/d/1Tss0IEzEyAPuKSGeNsfNgb0BfiW2ZHyP5nCFBW1uWlk">Beancount: Command Line Accounting Cookbook</a></li>
 <li><a href="http://hledger.org/how-to-use-another-account-separator-character.html">hledger: How to use another account separator character</a></li>
 <li><a href="http://hledger.org/more-docs.html#accounting">Accounting bookkeeping entries</a></li>
+<li><a href="https://github.com/simonmichael/hledger/issues/313">ledger-envelope-generator.rb</a></li>
 <li><a href="#ui-console">UI tools</a></li>
 </ul>
 <h4 id="importing">importing</h4>
diff --git a/index.md b/index.md
index c4d58b0..b017f8e 100644
--- a/index.md
+++ b/index.md
@@ -473,6 +473,7 @@ other console/curses tools
 - [Beancount: Command Line Accounting Cookbook](https://docs.google.com/document/d/1Tss0IEzEyAPuKSGeNsfNgb0BfiW2ZHyP5nCFBW1uWlk)
 - [hledger: How to use another account separator character](http://hledger.org/how-to-use-another-account-separator-character.html)
 - [Accounting bookkeeping entries](http://hledger.org/more-docs.html#accounting)
+- [ledger-envelope-generator.rb](https://github.com/simonmichael/hledger/issues/313)
 - [UI tools](#ui-console)
 
 #### importing