diff --git a/chat/server.js b/chat/server.js
index 95d9c50..e5ab742 100644
--- a/chat/server.js
+++ b/chat/server.js
@@ -5188,10 +5188,8 @@ async function ensureOpencodeSession(session, model) {
     try {
       const cliCommand = resolveCliCommand('opencode');
       const listCandidates = [
-        ['session', '--list', '--json'],
-        ['sessions', '--list', '--json'],
-        ['session', 'list', '--json'],
-        ['sessions', 'list', '--json'],
+        ['session', 'list', '--format', 'json'],
+        ['sessions', 'list', '--format', 'json'],
       ];
 
       let stdout = '';
@@ -16459,7 +16457,7 @@ async function handleRedoMessage(req, res, sessionId, messageId, userId) {
     log('Sending redo command to opencode', { sessionId, messageId, opencodeSessionId: session.opencodeSessionId });
 
     const cliCommand = resolveCliCommand('opencode');
-    const args = ['--message', '/redo', '--session', session.opencodeSessionId];
+    const args = ['run', '--session', session.opencodeSessionId, '/redo'];
 
     await runCommand(cliCommand, args, {
       cwd: session.workspaceDir || REPO_ROOT,