diff --git a/package-lock.json b/package-lock.json
index 2909798..3cb1738 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,17 +1,17 @@
 {
   "name": "takt",
-  "version": "0.20.0",
+  "version": "0.21.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "takt",
-      "version": "0.20.0",
+      "version": "0.21.0",
       "license": "MIT",
       "dependencies": {
         "@anthropic-ai/claude-agent-sdk": "^0.2.47",
         "@openai/codex-sdk": "^0.103.0",
-        "@opencode-ai/sdk": "^1.1.53",
+        "@opencode-ai/sdk": ">=1.1.53 <1.2.7",
         "chalk": "^5.3.0",
         "commander": "^12.1.0",
         "update-notifier": "^7.3.1",