diff --git a/Projects/Pro-React-16-Book/todo-v2/package-lock.json b/Projects/Pro-React-16-Book/todo-v2/package-lock.json
index 6a28ac1..0db3e44 100644
--- a/Projects/Pro-React-16-Book/todo-v2/package-lock.json
+++ b/Projects/Pro-React-16-Book/todo-v2/package-lock.json
@@ -9954,6 +9954,8 @@
     },
     "react": {
       "version": "16.8.6",
+      "resolved": "https://registry.npmjs.org/react/-/react-16.8.6.tgz",
+      "integrity": "sha512-pC0uMkhLaHm11ZSJULfOBqV4tIZkx87ZLvbbQYunNixAAvjnC+snJCg0XQXn9VIsttVsbZP/H/ewzgsd5fxKXw==",
       "requires": {
         "loose-envify": "^1.1.0",
         "object-assign": "^4.1.1",
@@ -10053,6 +10055,8 @@
     },
     "react-dom": {
       "version": "16.8.6",
+      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-16.8.6.tgz",
+      "integrity": "sha512-1nL7PIq9LTL3fthPqwkvr2zY7phIPjYrT0jp4HjyEQrEROnw4dG41VVwi/wfoCneoleqrNX7iAD+pXebJZwrwA==",
       "requires": {
         "loose-envify": "^1.1.0",
         "object-assign": "^4.1.1",
@@ -10072,6 +10076,8 @@
     },
     "react-scripts": {
       "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/react-scripts/-/react-scripts-3.0.1.tgz",
+      "integrity": "sha512-LKEjBhVpEB+c312NeJhzF+NATxF7JkHNr5GhtwMeRS1cMeLElMeIu8Ye7WGHtDP7iz7ra4ryy48Zpo6G/cwWUw==",
       "requires": {
         "@babel/core": "7.4.3",
         "@svgr/webpack": "4.1.0",
@@ -11942,9 +11948,9 @@
       }
     },
     "url-parse": {
-      "version": "1.4.7",
-      "resolved": "https://registry.npmjs.org/url-parse/-/url-parse-1.4.7.tgz",
-      "integrity": "sha512-d3uaVyzDB9tQoSXFvuSUNFibTd9zxd2bkVrDRvF5TmvWWQwqE4lgYJ5m+x1DbecWkw+LK4RNl2CU1hHuOKPVlg==",
+      "version": "1.5.10",
+      "resolved": "https://registry.npmjs.org/url-parse/-/url-parse-1.5.10.tgz",
+      "integrity": "sha512-WypcfiRhfeUP9vvF0j6rw0J3hrWrw6iZv3+22h6iRMJ/8z1Tj6XfLP4DsUix5MhMPnXpiHDoKyoZ/bdCkwBCiQ==",
       "requires": {
         "querystringify": "^2.1.1",
         "requires-port": "^1.0.0"
diff --git a/Projects/Pro-React-16-Book/todo-v2/yarn.lock b/Projects/Pro-React-16-Book/todo-v2/yarn.lock
index 7ed66d2..0d18fe0 100644
--- a/Projects/Pro-React-16-Book/todo-v2/yarn.lock
+++ b/Projects/Pro-React-16-Book/todo-v2/yarn.lock
@@ -7757,9 +7757,9 @@ querystring@0.2.0:
   integrity sha1-sgmEkgO7Jd+CDadW50cAWHhSFiA=
 
 querystringify@^2.1.1:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/querystringify/-/querystringify-2.1.1.tgz#60e5a5fd64a7f8bfa4d2ab2ed6fdf4c85bad154e"
-  integrity sha512-w7fLxIRCRT7U8Qu53jQnJyPkYZIaR4n5151KMfcJlO/A9397Wxb1amJvROTK6TOnp7PfoAmg/qXiNHI+08jRfA==
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/querystringify/-/querystringify-2.2.0.tgz#3345941b4153cb9d082d8eee4cda2016a9aef7f6"
+  integrity sha512-FIqgj2EUvTa7R50u0rGsyTftzjYmv/a3hO345bZNrqabNqjtgiDMgmo4mkUjd+nzU5oF3dClKqFIPUKybUyqoQ==
 
 raf@3.4.1:
   version "3.4.1"
@@ -9378,9 +9378,9 @@ url-loader@1.1.2:
     schema-utils "^1.0.0"
 
 url-parse@^1.4.3:
-  version "1.4.7"
-  resolved "https://registry.yarnpkg.com/url-parse/-/url-parse-1.4.7.tgz#a8a83535e8c00a316e403a5db4ac1b9b853ae278"
-  integrity sha512-d3uaVyzDB9tQoSXFvuSUNFibTd9zxd2bkVrDRvF5TmvWWQwqE4lgYJ5m+x1DbecWkw+LK4RNl2CU1hHuOKPVlg==
+  version "1.5.10"
+  resolved "https://registry.yarnpkg.com/url-parse/-/url-parse-1.5.10.tgz#9d3c2f736c1d75dd3bd2be507dcc111f1e2ea9c1"
+  integrity sha512-WypcfiRhfeUP9vvF0j6rw0J3hrWrw6iZv3+22h6iRMJ/8z1Tj6XfLP4DsUix5MhMPnXpiHDoKyoZ/bdCkwBCiQ==
   dependencies:
     querystringify "^2.1.1"
     requires-port "^1.0.0"