diff --git a/yarn.lock b/yarn.lock
index fe1230e..bfd1e4f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2082,7 +2082,7 @@
   resolved "https://registry.yarnpkg.com/@vuepress/plugin-search/-/plugin-search-1.8.2.tgz#74b92f663acf6b4560e15dc0442a84c4e874e206"
   integrity sha512-JrSJr9o0Kar14lVtZ4wfw39pplxvvMh8vDBD9oW09a+6Zi/4bySPGdcdaqdqGW+OHSiZNvG+6uyfKSBBBqF6PA==
 
-"@vuepress/shared-utils@1.8.2", "@vuepress/shared-utils@^1.2.0", "@vuepress/shared-utils@^1.7.1":
+"@vuepress/shared-utils@1.8.2":
   version "1.8.2"
   resolved "https://registry.yarnpkg.com/@vuepress/shared-utils/-/shared-utils-1.8.2.tgz#5ec1601f2196aca34ad82eed7c9be2d7948f705b"
   integrity sha512-6kGubc7iBDWruEBUU7yR+sQ++SOhMuvKWvWeTZJKRZedthycdzYz7QVpua0FaZSAJm5/dIt8ymU4WQvxTtZgTQ==
@@ -2097,6 +2097,21 @@
     toml "^3.0.0"
     upath "^1.1.0"
 
+"@vuepress/shared-utils@^1.2.0", "@vuepress/shared-utils@^1.7.1":
+  version "1.9.9"
+  resolved "https://registry.yarnpkg.com/@vuepress/shared-utils/-/shared-utils-1.9.9.tgz#f6561ec2264d54e4e459d17678766ffe09f4bfc6"
+  integrity sha512-qhk/7QF5LgMEXhEB1hlqreGFgkz4p2pmaBBNFxnAnYmSwmyO+u/oFOpZLI16QRx9Wg6ekR2ENmByQLxV7y4lJg==
+  dependencies:
+    chalk "^2.3.2"
+    escape-html "^1.0.3"
+    fs-extra "^7.0.1"
+    globby "^9.2.0"
+    gray-matter "^4.0.1"
+    hash-sum "^1.0.2"
+    semver "^6.0.0"
+    toml "^3.0.0"
+    upath "^1.1.0"
+
 "@vuepress/theme-default@1.8.2":
   version "1.8.2"
   resolved "https://registry.yarnpkg.com/@vuepress/theme-default/-/theme-default-1.8.2.tgz#7f474036c752c1f9801b83f68f5c70c092b182b4"