diff --git a/todo.txt b/todo.txt
index 2217a24..3f381fa 100644
--- a/todo.txt
+++ b/todo.txt
@@ -9,4 +9,6 @@
 9. Add 'install' target to Meson, to allow the user to install the game. This should also copy the .so files to the right locations.
 10. Allow the user to specify which paddle they want to control, in multi-player mode.
 11. Add IPv6 support for the server and client sockets (and everything that goes along with it, such as error handling for IP addresses).
-13. Communicate the paddle reset position to the peer, after a round.
+12. Communicate the paddle reset position to the peer, after a round.
+13. Test with valgrind.
+14. Remove IP version as a parameter from Client and Server constructors. Instead, determine the version based on the address.