diff --git a/packages/opencode/src/server/server.ts b/packages/opencode/src/server/server.ts
index d38d2c969..1b123f532 100644
--- a/packages/opencode/src/server/server.ts
+++ b/packages/opencode/src/server/server.ts
@@ -201,6 +201,7 @@ export namespace Server {
         }),
         async (c) => {
           const sessions = await Array.fromAsync(Session.list())
+          sessions.sort((a, b) => b.time.updated - a.time.updated)
           return c.json(sessions)
         },
       )
diff --git a/packages/opencode/src/session/index.ts b/packages/opencode/src/session/index.ts
index 01634ecdc..b008a9e35 100644
--- a/packages/opencode/src/session/index.ts
+++ b/packages/opencode/src/session/index.ts
@@ -509,6 +509,8 @@ export namespace Session {
     for (const part of userParts) {
       await updatePart(part)
     }
+    // mark session as updated since a message has been added to it
+    await update(input.sessionID, (_draft) => {})
 
     if (isLocked(input.sessionID)) {
       return new Promise((resolve) => {
diff --git a/packages/tui/internal/app/app.go b/packages/tui/internal/app/app.go
index b3c4fbed6..df4e209cf 100644
--- a/packages/tui/internal/app/app.go
+++ b/packages/tui/internal/app/app.go
@@ -5,7 +5,6 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
-	"sort"
 	"strings"
 
 	"log/slog"
@@ -532,9 +531,6 @@ func (a *App) ListSessions(ctx context.Context) ([]opencode.Session, error) {
 		return []opencode.Session{}, nil
 	}
 	sessions := *response
-	sort.Slice(sessions, func(i, j int) bool {
-		return sessions[i].Time.Created-sessions[j].Time.Created > 0
-	})
 	return sessions, nil
 }