diff --git a/package-lock.json b/package-lock.json
index 198056d377..20d7b5b22d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1969,9 +1969,9 @@
       }
     },
     "extend": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.1.tgz",
-      "integrity": "sha1-p1Xqe8Gt/MWjHOfnYtuq3F5jZEQ=",
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
+      "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==",
       "dev": true
     },
     "extglob": {
@@ -4268,11 +4268,6 @@
                     }
                   }
                 },
-                "extend": {
-                  "version": "3.0.0",
-                  "bundled": true,
-                  "dev": true
-                },
                 "forever-agent": {
                   "version": "0.6.1",
                   "bundled": true,
@@ -6748,11 +6743,6 @@
                     }
                   }
                 },
-                "extend": {
-                  "version": "3.0.1",
-                  "bundled": true,
-                  "dev": true
-                },
                 "forever-agent": {
                   "version": "0.6.1",
                   "bundled": true,
@@ -8941,11 +8931,6 @@
                         }
                       }
                     },
-                    "extend": {
-                      "version": "3.0.0",
-                      "bundled": true,
-                      "dev": true
-                    },
                     "forever-agent": {
                       "version": "0.6.1",
                       "bundled": true,
@@ -9669,6 +9654,11 @@
       "integrity": "sha512-vY+8Prz58H6iu6c7KHyOISxapKnwU8P1TWNqOzESFAB40ny9D/R7GpNL2IluicrsDvtI6VfpQeCYQbBniamulw==",
       "dev": true
     },
+    "gitbook-plugin-toggle-chapters": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/gitbook-plugin-toggle-chapters/-/gitbook-plugin-toggle-chapters-0.0.3.tgz",
+      "integrity": "sha1-bl9aphubLiIcOAzfbpKDIAFez7k="
+    },
     "gitbook-plugin-youtube": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/gitbook-plugin-youtube/-/gitbook-plugin-youtube-1.1.0.tgz",
@@ -12447,11 +12437,6 @@
                 }
               }
             },
-            "extend": {
-              "version": "3.0.0",
-              "bundled": true,
-              "dev": true
-            },
             "forever-agent": {
               "version": "0.6.1",
               "bundled": true,
@@ -13723,12 +13708,6 @@
         "uuid": "^3.3.2"
       },
       "dependencies": {
-        "extend": {
-          "version": "3.0.2",
-          "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
-          "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==",
-          "dev": true
-        },
         "mime-db": {
           "version": "1.38.0",
           "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.38.0.tgz",