diff --git a/package-lock.json b/package-lock.json
index 85fcddb..6a0fa6f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1540,9 +1540,9 @@
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+      "resolved": "https://registry.npmjs.org/@vuepress/plugin-back-to-top/-/plugin-back-to-top-1.8.3.tgz",
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@@ -2498,6 +2498,15 @@
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+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
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+          }
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           "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
@@ -4052,9 +4061,9 @@
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+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
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@@ -4690,9 +4699,9 @@
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-      "resolved": "https://registry.npmjs.org/estraverse/-/estraverse-5.2.0.tgz",
-      "integrity": "sha512-BxbNGGNm0RyRYvUdHpIwv9IWzeM9XClbOxwoATuFdOE7ZE6wHL+HQ5T8hoPM+zHvmKzzsEqhgy0GrQ5X13afiQ==",
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/estraverse/-/estraverse-5.3.0.tgz",
+      "integrity": "sha512-MMdARuVEQziNTeJD8DgMqmhwR11BRQ/cBP+pLtYdSTnf3MIO8fFeiINEbX36ZdNlfU/7A9f3gUw49B3oQsvwBA==",
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@@ -5842,12 +5851,12 @@
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-      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
-      "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
+      "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
       "dev": true,
       "requires": {
-        "safer-buffer": ">= 2.1.2 < 3"
+        "safer-buffer": ">= 2.1.2 < 3.0.0"
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     "icss-replace-symbols": {
@@ -7005,18 +7014,18 @@
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-      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.50.0.tgz",
-      "integrity": "sha512-9tMZCDlYHqeERXEHO9f/hKfNXhre5dK2eE/krIvUjZbS2KPcqGDfNShIWS1uW9XOTKQKqK6qbeOci18rbfW77A==",
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+      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.51.0.tgz",
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-      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.33.tgz",
-      "integrity": "sha512-plLElXp7pRDd0bNZHw+nMd52vRYjLwQjygaNg7ddJ2uJtTlmnTCjWuPKxVu6//AdaRuME84SvLW91sIkBqGT0g==",
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+      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.34.tgz",
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       "dev": true,
       "requires": {
-        "mime-db": "1.50.0"
+        "mime-db": "1.51.0"
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@@ -8678,6 +8687,15 @@
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           "dev": true
+        },
+        "iconv-lite": {
+          "version": "0.4.24",
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
+          "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
+          "dev": true,
+          "requires": {
+            "safer-buffer": ">= 2.1.2 < 3"
+          }
         }
       }
     },
@@ -11443,17 +11461,6 @@
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-          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
-          "integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
-          "dev": true,
-          "requires": {
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-          }
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     "whatwg-mimetype": {
@@ -11617,9 +11624,9 @@
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-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.3.0.tgz",
-      "integrity": "sha512-Gs5EZtpqZzLvmIM59w4igITU57lrtYVFneaa434VROv4thzJyV6UjIL3D42lslWlI+D4KzLYnxSwtfuiO79sNw==",
+      "version": "8.4.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.4.0.tgz",
+      "integrity": "sha512-IHVsKe2pjajSUIl4KYMQOdlyliovpEPquKkqbwswulszzI7r0SfQrxnXdWAEqOlDCLrVSJzo+O1hAwdog2sKSQ==",
       "dev": true
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     "xdg-basedir": {
diff --git a/package.json b/package.json
index 9691aee..47c7c7d 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   },
   "license": "Apache-2.0",
   "devDependencies": {
-    "@vuepress/plugin-back-to-top": "1.8.2",
+    "@vuepress/plugin-back-to-top": "1.8.3",
     "@vuepress/plugin-medium-zoom": "1.8.3",
     "jsdom": "19.0.0",
     "markdown-it-attrs": "4.1.1",