diff --git a/data/tree.json b/data/tree.json
index fffd9d34d144d3a569ac677553e4e92280e5e13c..c835bcb369ed8671ffd0eeb2de5f940689b8b1c4 100644
--- a/data/tree.json
+++ b/data/tree.json
@@ -699,18 +699,22 @@
                       "keywords_must": [
                         [
                           "Ubuntu",
+                          "操作系统",
                           "安装"
                         ],
                         [
                           "CentOS",
+                          "操作系统",
                           "安装"
                         ],
                         [
                           "Debian",
+                          "操作系统",
                           "安装"
                         ],
                         [
                           "RedHat",
+                          "操作系统",
                           "安装"
                         ]
                       ],