diff --git a/scripts/agent-install.sh b/scripts/agent-install.sh
index 0e254f9..059d789 100755
--- a/scripts/agent-install.sh
+++ b/scripts/agent-install.sh
@@ -15,7 +15,8 @@ fetch() {
     [[ -f "${NG_LOCAL_SRC}/$1" ]] || die "NG_LOCAL_SRC 目录缺少 $1"
     cp -a "${NG_LOCAL_SRC}/$1" "$2"
   else
-    curl -fL --retry 3 "https://raw.githubusercontent.com/${REPO}/${BRANCH}/$1" -o "$2"
+    # 加时间戳破坏 GitHub raw 缓存，避免拉到旧版
+    curl -fL --retry 3 "https://raw.githubusercontent.com/${REPO}/${BRANCH}/$1?t=$(date +%s)" -o "$2"
   fi
 }