diff --git a/learning-solidity-2018/30_web3-deploy-example-master/package-lock.json b/learning-solidity-2018/30_web3-deploy-example-master/package-lock.json
index 3e8db10..c685d56 100644
--- a/learning-solidity-2018/30_web3-deploy-example-master/package-lock.json
+++ b/learning-solidity-2018/30_web3-deploy-example-master/package-lock.json
@@ -744,7 +744,9 @@
       "integrity": "sha1-ZyIm3HTI95mtNTB9+TaroRrNYBg="
     },
     "dotenv": {
-      "version": "6.2.0"
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-6.2.0.tgz",
+      "integrity": "sha512-HygQCKUBSFl8wKQZBSemMywRWcEDNidvNbjGVyZu3nbZ8qq9ubiPoGLMdRDpfSrpkkm9BXYFkpKxxFX38o/76w=="
     },
     "drbg.js": {
       "version": "1.0.1",
@@ -893,6 +895,15 @@
       "resolved": "http://registry.npm.taobao.org/ethereum-common/download/ethereum-common-0.0.18.tgz",
       "integrity": "sha1-L9w1dvIykDNYl26znaeDIT/5Uj8="
     },
+    "ethereumjs-tx": {
+      "version": "1.3.7",
+      "resolved": "https://registry.npmjs.org/ethereumjs-tx/-/ethereumjs-tx-1.3.7.tgz",
+      "integrity": "sha512-wvLMxzt1RPhAQ9Yi3/HKZTn0FZYpnsmQdbKYfUUpi4j1SEIcbkd9tndVjcPrufY3V7j2IebOpC00Zp2P/Ay2kA==",
+      "requires": {
+        "ethereum-common": "^0.0.18",
+        "ethereumjs-util": "^5.0.0"
+      }
+    },
     "ethereumjs-util": {
       "version": "5.2.0",
       "resolved": "http://registry.npm.taobao.org/ethereumjs-util/download/ethereumjs-util-5.2.0.tgz",
@@ -1251,7 +1262,8 @@
         },
         "ansi-regex": {
           "version": "2.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -1269,11 +1281,13 @@
         },
         "balanced-match": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -1286,15 +1300,18 @@
         },
         "code-point-at": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -1397,7 +1414,8 @@
         },
         "inherits": {
           "version": "2.0.3",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -1407,6 +1425,7 @@
         "is-fullwidth-code-point": {
           "version": "1.0.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -1419,17 +1438,20 @@
         "minimatch": {
           "version": "3.0.4",
           "bundled": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
         },
         "minimist": {
           "version": "0.0.8",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -1446,6 +1468,7 @@
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -1518,7 +1541,8 @@
         },
         "number-is-nan": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -1528,6 +1552,7 @@
         "once": {
           "version": "1.4.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -1603,7 +1628,8 @@
         },
         "safe-buffer": {
           "version": "5.1.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -1633,6 +1659,7 @@
         "string-width": {
           "version": "1.0.2",
           "bundled": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -1650,6 +1677,7 @@
         "strip-ansi": {
           "version": "3.0.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -1688,11 +1716,13 @@
         },
         "wrappy": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         }
       }
     },
@@ -1942,9 +1972,9 @@
       }
     },
     "hosted-git-info": {
-      "version": "2.7.1",
-      "resolved": "http://registry.npm.taobao.org/hosted-git-info/download/hosted-git-info-2.7.1.tgz",
-      "integrity": "sha1-l/I2l3vW4SVAiTD/bePuxigewEc="
+      "version": "2.8.9",
+      "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.8.9.tgz",
+      "integrity": "sha512-mxIDAb9Lsm6DoOJ7xH+5+X4y1LU/4Hi50L9C5sIswK3JzULS4bwk1FvjdBgvYR4bzT4tuUQiC15FE2f5HbLvYw=="
     },
     "idna-uts46-hx": {
       "version": "2.3.1",
@@ -3723,6 +3753,8 @@
     },
     "web3": {
       "version": "1.0.0-beta.55",
+      "resolved": "https://registry.npmjs.org/web3/-/web3-1.0.0-beta.55.tgz",
+      "integrity": "sha512-yJpwy4IUA3T/F9hWzYQVn0GbJCrAaZ0KTIO3iuqkhaYH0Y09KV7k4GzFi4hN7hT4cFTj4yIKaeVCwQ5kzvi2Vg==",
       "requires": {
         "@babel/runtime": "^7.3.1",
         "@types/node": "^10.12.18",
diff --git a/learning-solidity-2018/30_web3-deploy-example-master/yarn.lock b/learning-solidity-2018/30_web3-deploy-example-master/yarn.lock
index c7dc51d..65a38b7 100644
--- a/learning-solidity-2018/30_web3-deploy-example-master/yarn.lock
+++ b/learning-solidity-2018/30_web3-deploy-example-master/yarn.lock
@@ -1304,9 +1304,9 @@ homedir-polyfill@^1.0.1:
     parse-passwd "^1.0.0"
 
 hosted-git-info@^2.1.4:
-  version "2.7.1"
-  resolved "https://registry.npm.taobao.org/hosted-git-info/download/hosted-git-info-2.7.1.tgz#97f236977bd6e125408930ff6de3eec6281ec047"
-  integrity sha1-l/I2l3vW4SVAiTD/bePuxigewEc=
+  version "2.8.9"
+  resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.8.9.tgz#dffc0bf9a21c02209090f2aa69429e1414daf3f9"
+  integrity sha512-mxIDAb9Lsm6DoOJ7xH+5+X4y1LU/4Hi50L9C5sIswK3JzULS4bwk1FvjdBgvYR4bzT4tuUQiC15FE2f5HbLvYw==
 
 iconv-lite@^0.4.4:
   version "0.4.24"
@@ -1693,6 +1693,11 @@ lodash@^4.17.11:
   resolved "https://registry.npm.taobao.org/lodash/download/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
   integrity sha1-tEf2ZwoEVbv+7dETku/zMOoJdUg=
 
+lodash@^4.17.15:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
+
 make-iterator@^1.0.0:
   version "1.0.1"
   resolved "https://registry.npm.taobao.org/make-iterator/download/make-iterator-1.0.1.tgz#29b33f312aa8f547c4a5e490f56afcec99133ad6"