diff --git a/.claude/tools/runcc.sh b/.claude/tools/runcc.sh
index 026460e..b1cbb44 100755
--- a/.claude/tools/runcc.sh
+++ b/.claude/tools/runcc.sh
@@ -2,8 +2,7 @@
 # Claude Code 启动脚本
 # 支持多 Provider (通过 .env 配置，自动解析 ${PROVIDER}_BASE_URL / ${PROVIDER}_AUTH_TOKEN)
 #
-# 固定版本: 2.1.112 (来自 /workspace/.devcontainer/.cache/npm/anthropic-ai-claude-code-2.1.112.tgz)
-# 注意: 不再执行自动更新，以保持版本稳定
+# 每天首次启动时自动执行 claude upgrade
 
 # ── 路径配置 ──────────────────────────────────────────────
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
@@ -166,6 +165,19 @@ if [ -n "${TMUX:-}" ]; then
     tmux set-option -p @anthropic_model "$MODEL"
 fi
 
+# ── 每日自动更新 ────────────────────────────────────────
+UPGRADE_MARKER="${HOME}/.claude/.last-upgrade-date"
+TODAY="$(date +%Y-%m-%d)"
+if [ ! -f "$UPGRADE_MARKER" ] || [ "$(cat "$UPGRADE_MARKER" 2>/dev/null)" != "$TODAY" ]; then
+    echo "每日首次启动，检查 Claude Code 更新..."
+    if claude upgrade 2>&1; then
+        mkdir -p "$(dirname "$UPGRADE_MARKER")"
+        echo "$TODAY" > "$UPGRADE_MARKER"
+    else
+        echo "警告: claude upgrade 失败，跳过更新继续启动"
+    fi
+fi
+
 # ── 启动 Claude Code ────────────────────────────────────
 CC_ARGS=(--ide --dangerously-skip-permissions --allow-dangerously-skip-permissions --effort max)