diff --git a/docs/gotchas.md b/docs/gotchas.md
index ab9e6e66..5cf01a20 100644
--- a/docs/gotchas.md
+++ b/docs/gotchas.md
@@ -111,7 +111,8 @@ collision rate gets meaningful; at 2–3 agents you can still get
 unlucky. Operator resolves a collision by renaming the offending
 agent (different hash → different port) and rebuilding. No state
 file, no probing, no port-allocation drift — the value is
-reproducible from just the name. Manager is fixed at 8000;
+reproducible from just the name. Every agent — including the
+manager — hashes into 8100..8999 via the same FNV-1a since #753;
 dashboard at `cfg.dashboardPort` (default 7000).
 
 ## Restart races on TCP bind