diff --git a/THANKS b/THANKS
index 0c40c582..2a3222b3 100644
--- a/THANKS
+++ b/THANKS
@@ -9,6 +9,8 @@ Chris Wright - For encouraging me to continue work on my prototype.
 
 Daniel Riek - For supporting and sheltering this project from bureaucracy.
 
+Ira Cooper - For having an algorithmic design discussion with me.
+
 Jeff Darcy - For some algorithm recommendations, and NACKing my TopoSort idea!
 
 Red Hat, inc. - For paying my salary, thus financially supporting my hacking.