diff --git a/agents/agent-keepaTodofile.md b/agents/agent-keepaTodofile.md
index 3c63d2f..45c3f71 100644
--- a/agents/agent-keepaTodofile.md
+++ b/agents/agent-keepaTodofile.md
@@ -43,7 +43,7 @@ You have explicit authority to:
 
 This is a "to do next" file, particularly useful to keep the human and a coding assistant in sync.
 
-The format is based on [Keep a Todofile V0.0.1](https://coulomb.social/open/KeepaTodofile).
+The format is based on [Keep a Todofile V0.0.1](https://coulomb.social/open/TodoFileGuide).
 
 The structure organizes **future tasks** by their impact, just as a changelog organizes past changes by their impact.