diff --git a/agent/dashboard/agent_usage.py b/agent/dashboard/agent_usage.py
index a53ddd7e..f3a305c7 100644
--- a/agent/dashboard/agent_usage.py
+++ b/agent/dashboard/agent_usage.py
@@ -398,6 +398,7 @@ async def _build_usage_leaderboard_snapshot(period: Period) -> dict[str, Any]:
     sorted_users = sorted(
         users.values(),
         key=lambda item: (
+            -item["merged_prs"],
             -item["agent_loc"],
             -item["prs_opened"],
             -item["agent_runs"],
diff --git a/ui/src/routes/usage.tsx b/ui/src/routes/usage.tsx
index bb93e3b6..0574a846 100644
--- a/ui/src/routes/usage.tsx
+++ b/ui/src/routes/usage.tsx
@@ -63,7 +63,7 @@ function UsagePage() {
     <AppShell user={session.data} title="Usage" className="max-w-5xl">
       <SettingsSection
         title="Agent leaderboard"
-        description="Ranked by agent lines of code, then PRs opened and agent runs."
+        description="Ranked by merged PRs, then agent lines of code, PRs opened, and agent runs."
         action={
           <Select
             value={activePeriod}