diff --git a/chapter4/node-serial-benchmark/package-lock.json b/chapter4/node-serial-benchmark/package-lock.json
index 5a04235..fe3d1bf 100644
--- a/chapter4/node-serial-benchmark/package-lock.json
+++ b/chapter4/node-serial-benchmark/package-lock.json
@@ -4,25 +4,75 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
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-      "version": "5.7.3",
-      "resolved": "https://registry.npm.taobao.org/acorn/download/acorn-5.7.3.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Facorn%2Fdownload%2Facorn-5.7.3.tgz",
-      "integrity": "sha1-Z6ojG/iBKXS4UjWpZ3Hra9B+onk="
+    "@protobufjs/aspromise": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@protobufjs/aspromise/-/aspromise-1.1.2.tgz",
+      "integrity": "sha512-j+gKExEuLmKwvz3OgROXtrJ2UG2x8Ch2YZUxahh+s1F2HZ+wAceUNLkvy6zKCPVRkU++ZWQrdxsUeQXmcg4uoQ=="
     },
-    "ansi-regex": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npm.taobao.org/ansi-regex/download/ansi-regex-2.1.1.tgz?cache=0&sync_timestamp=1570188663907&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fansi-regex%2Fdownload%2Fansi-regex-2.1.1.tgz",
-      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
+    "@protobufjs/base64": {
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+      "resolved": "https://registry.npmjs.org/@protobufjs/base64/-/base64-1.1.2.tgz",
+      "integrity": "sha512-AZkcAA5vnN/v4PDqKyMR5lx7hZttPDgClv83E//FMNhR2TMcLUhfRUBHCmSl0oi9zMgDDqRUJkSxO3wm85+XLg=="
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-    "ascli": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npm.taobao.org/ascli/download/ascli-1.0.1.tgz",
-      "integrity": "sha1-vPpZdKYvGOgcq660lzKrSoj5Brw=",
+    "@protobufjs/codegen": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/@protobufjs/codegen/-/codegen-2.0.4.tgz",
+      "integrity": "sha512-YyFaikqM5sH0ziFZCN3xDC7zeGaB/d0IUb9CATugHWbd1FRFwWwt4ld4OYMPWu5a3Xe01mGAULCdqhMlPl29Jg=="
+    },
+    "@protobufjs/eventemitter": {
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+      "resolved": "https://registry.npmjs.org/@protobufjs/eventemitter/-/eventemitter-1.1.0.tgz",
+      "integrity": "sha512-j9ednRT81vYJ9OfVuXG6ERSTdEL1xVsNgqpkxMsbIabzSo3goCjDIveeGv5d03om39ML71RdmrGNjG5SReBP/Q=="
+    },
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+      "resolved": "https://registry.npmjs.org/@protobufjs/fetch/-/fetch-1.1.0.tgz",
+      "integrity": "sha512-lljVXpqXebpsijW71PZaCYeIcE5on1w5DlQy5WH6GLbFryLUrBD4932W/E2BSpfRJWseIL4v/KPgBFxDOIdKpQ==",
       "requires": {
-        "colour": "~0.7.1",
-        "optjs": "~3.2.2"
+        "@protobufjs/aspromise": "^1.1.1",
+        "@protobufjs/inquire": "^1.1.0"
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+    "@protobufjs/float": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@protobufjs/float/-/float-1.0.2.tgz",
+      "integrity": "sha512-Ddb+kVXlXst9d+R9PfTIxh1EdNkgoRe5tOX6t01f1lYWOvJnSPDBlG241QLzcyPdoNTsblLUdujGSE4RzrTZGQ=="
+    },
+    "@protobufjs/inquire": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@protobufjs/inquire/-/inquire-1.1.0.tgz",
+      "integrity": "sha512-kdSefcPdruJiFMVSbn801t4vFK7KB/5gd2fYvrxhuJYg8ILrmn9SKSX2tZdV6V+ksulWqS7aXjBcRXl3wHoD9Q=="
+    },
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+      "resolved": "https://registry.npmjs.org/@protobufjs/path/-/path-1.1.2.tgz",
+      "integrity": "sha512-6JOcJ5Tm08dOHAbdR3GrvP+yUUfkjG5ePsHYczMFLq3ZmMkAD98cDgcT2iA1lJ9NVwFd4tH/iSSoe44YWkltEA=="
+    },
+    "@protobufjs/pool": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@protobufjs/pool/-/pool-1.1.0.tgz",
+      "integrity": "sha512-0kELaGSIDBKvcgS4zkjz1PeddatrjYcmMWOlAuAPwAeccUrPHdUqo/J6LiymHHEiJT5NrF1UVwxY14f+fy4WQw=="
+    },
+    "@protobufjs/utf8": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@protobufjs/utf8/-/utf8-1.1.0.tgz",
+      "integrity": "sha512-Vvn3zZrhQZkkBE8LSuW3em98c0FwgO4nxzv6OdSxPKJIEKY2bGbHn+mhGIPerzI4twdxaP8/0+06HBpwf345Lw=="
+    },
+    "@types/long": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/@types/long/-/long-4.0.2.tgz",
+      "integrity": "sha512-MqTGEo5bj5t157U6fA/BiDynNkn0YknVdh48CMPkTSpFTVmvao5UQmm7uEF6xBEo7qIMAlY/JSleYaE6VOdpaA=="
+    },
+    "@types/node": {
+      "version": "17.0.38",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-17.0.38.tgz",
+      "integrity": "sha512-5jY9RhV7c0Z4Jy09G+NIDTsCZ5G0L5n+Z+p+Y7t5VJHM30bgwzSjVtlcBxqAj+6L/swIlvtOSzr8rBk/aNyV2g=="
+    },
+    "acorn": {
+      "version": "5.7.3",
+      "resolved": "https://registry.npm.taobao.org/acorn/download/acorn-5.7.3.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Facorn%2Fdownload%2Facorn-5.7.3.tgz",
+      "integrity": "sha1-Z6ojG/iBKXS4UjWpZ3Hra9B+onk="
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npm.taobao.org/balanced-match/download/balanced-match-1.0.0.tgz",
@@ -63,20 +113,6 @@
       "resolved": "https://registry.npm.taobao.org/bufferview/download/bufferview-1.0.1.tgz",
       "integrity": "sha1-ev10pF+Tf6QiodM4wIu/3HbNcl0="
     },
-    "bytebuffer": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npm.taobao.org/bytebuffer/download/bytebuffer-4.1.0.tgz",
-      "integrity": "sha1-TFgmngUqseSx9/82T9+zzogpBqo=",
-      "requires": {
-        "bufferview": "~1",
-        "long": "~2 >=2.3.0"
-      }
-    },
-    "camelcase": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npm.taobao.org/camelcase/download/camelcase-2.1.1.tgz",
-      "integrity": "sha1-fB0W1nmhu+WcoCys7PsBHiAfWh8="
-    },
     "cli": {
       "version": "1.0.1",
       "resolved": "https://registry.npm.taobao.org/cli/download/cli-1.0.1.tgz",
@@ -86,26 +122,6 @@
         "glob": "^7.1.1"
       }
     },
-    "cliui": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npm.taobao.org/cliui/download/cliui-3.2.0.tgz",
-      "integrity": "sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=",
-      "requires": {
-        "string-width": "^1.0.1",
-        "strip-ansi": "^3.0.1",
-        "wrap-ansi": "^2.0.0"
-      }
-    },
-    "code-point-at": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npm.taobao.org/code-point-at/download/code-point-at-1.1.0.tgz",
-      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
-    },
-    "colour": {
-      "version": "0.7.1",
-      "resolved": "https://registry.npm.taobao.org/colour/download/colour-0.7.1.tgz",
-      "integrity": "sha1-nLFpkX7F0SwHNtPoaFdG3xyt93g="
-    },
     "commander": {
       "version": "2.1.0",
       "resolved": "https://registry.npm.taobao.org/commander/download/commander-2.1.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fcommander%2Fdownload%2Fcommander-2.1.0.tgz",
@@ -182,11 +198,6 @@
       "resolved": "https://registry.npm.taobao.org/date-now/download/date-now-0.1.4.tgz",
       "integrity": "sha1-6vQ5/U1ISK105cx9vvIAZyueNFs="
     },
-    "decamelize": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npm.taobao.org/decamelize/download/decamelize-1.2.0.tgz",
-      "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA="
-    },
     "deep-is": {
       "version": "0.1.3",
       "resolved": "https://registry.npm.taobao.org/deep-is/download/deep-is-0.1.3.tgz",
@@ -403,19 +414,6 @@
       "resolved": "https://registry.npm.taobao.org/inherits/download/inherits-2.0.4.tgz?cache=0&sync_timestamp=1560975547815&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Finherits%2Fdownload%2Finherits-2.0.4.tgz",
       "integrity": "sha1-D6LGT5MpF8NDOg3tVTY6rjdBa3w="
     },
-    "invert-kv": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npm.taobao.org/invert-kv/download/invert-kv-1.0.0.tgz",
-      "integrity": "sha1-EEqOSqym09jNFXqO+L+rLXo//bY="
-    },
-    "is-fullwidth-code-point": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npm.taobao.org/is-fullwidth-code-point/download/is-fullwidth-code-point-1.0.0.tgz",
-      "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
-      "requires": {
-        "number-is-nan": "^1.0.0"
-      }
-    },
     "is-property": {
       "version": "1.0.2",
       "resolved": "https://registry.npm.taobao.org/is-property/download/is-property-1.0.2.tgz",
@@ -441,14 +439,6 @@
         "strip-json-comments": "1.0.x"
       }
     },
-    "lcid": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npm.taobao.org/lcid/download/lcid-1.0.0.tgz",
-      "integrity": "sha1-MIrMr6C8SDo4Z7S28rlQYlHRuDU=",
-      "requires": {
-        "invert-kv": "^1.0.0"
-      }
-    },
     "levn": {
       "version": "0.3.0",
       "resolved": "https://registry.npm.taobao.org/levn/download/levn-0.3.0.tgz",
@@ -514,11 +504,6 @@
       "resolved": "https://registry.npm.taobao.org/node-int64/download/node-int64-0.3.3.tgz",
       "integrity": "sha1-LW5rLs5d6FiLQ9iNG8QbJs0fqE0="
     },
-    "number-is-nan": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npm.taobao.org/number-is-nan/download/number-is-nan-1.0.1.tgz",
-      "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0="
-    },
     "object-inspect": {
       "version": "1.4.1",
       "resolved": "https://registry.npm.taobao.org/object-inspect/download/object-inspect-1.4.1.tgz",
@@ -555,19 +540,6 @@
       "resolved": "https://registry.npm.taobao.org/options/download/options-0.0.6.tgz",
       "integrity": "sha1-7CLTEoBrtT5zF3Pnza788cZDEo8="
     },
-    "optjs": {
-      "version": "3.2.2",
-      "resolved": "https://registry.npm.taobao.org/optjs/download/optjs-3.2.2.tgz",
-      "integrity": "sha1-aabOicRCpEQDFBrS+bNwvVu29O4="
-    },
-    "os-locale": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npm.taobao.org/os-locale/download/os-locale-1.4.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fos-locale%2Fdownload%2Fos-locale-1.4.0.tgz",
-      "integrity": "sha1-IPnxeuKe00XoveWDsT0gCYA8FNk=",
-      "requires": {
-        "lcid": "^1.0.0"
-      }
-    },
     "path-is-absolute": {
       "version": "1.0.1",
       "resolved": "https://registry.npm.taobao.org/path-is-absolute/download/path-is-absolute-1.0.1.tgz",
@@ -594,27 +566,29 @@
       "integrity": "sha1-eCDZsWEgzFXKmud5JoCufbptf+I="
     },
     "protobufjs": {
-      "version": "4.1.3",
-      "resolved": "https://registry.npm.taobao.org/protobufjs/download/protobufjs-4.1.3.tgz",
-      "integrity": "sha1-jjbRsCJsu2jWR+S0TCoUTzfyd54=",
-      "requires": {
-        "ascli": "~1",
-        "bytebuffer": "~4 >=4.1",
-        "glob": "^5.0.10",
-        "yargs": "^3.10.0"
+      "version": "6.11.3",
+      "resolved": "https://registry.npmjs.org/protobufjs/-/protobufjs-6.11.3.tgz",
+      "integrity": "sha512-xL96WDdCZYdU7Slin569tFX712BxsxslWwAfAhCYjQKGTq7dAU91Lomy6nLLhh/dyGhk/YH4TwTSRxTzhuHyZg==",
+      "requires": {
+        "@protobufjs/aspromise": "^1.1.2",
+        "@protobufjs/base64": "^1.1.2",
+        "@protobufjs/codegen": "^2.0.4",
+        "@protobufjs/eventemitter": "^1.1.0",
+        "@protobufjs/fetch": "^1.1.0",
+        "@protobufjs/float": "^1.0.2",
+        "@protobufjs/inquire": "^1.1.0",
+        "@protobufjs/path": "^1.1.2",
+        "@protobufjs/pool": "^1.1.0",
+        "@protobufjs/utf8": "^1.1.0",
+        "@types/long": "^4.0.1",
+        "@types/node": ">=13.7.0",
+        "long": "^4.0.0"
       },
       "dependencies": {
-        "glob": {
-          "version": "5.0.15",
-          "resolved": "https://registry.npm.taobao.org/glob/download/glob-5.0.15.tgz",
-          "integrity": "sha1-G8k2ueAvSmA/zCIuz3Yz0wuLk7E=",
-          "requires": {
-            "inflight": "^1.0.4",
-            "inherits": "2",
-            "minimatch": "2 || 3",
-            "once": "^1.3.0",
-            "path-is-absolute": "^1.0.0"
-          }
+        "long": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/long/-/long-4.0.0.tgz",
+          "integrity": "sha512-XsP+KhQif4bjX1kbuSiySJFNAehNxgLb6hPRGJ9QsUr8ajHkuXGdrHmFUTUUXhDwVX2R5bY4JNZEwbUiMhV+MA=="
         }
       }
     },
@@ -776,29 +750,11 @@
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       }
     },
-    "string-width": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npm.taobao.org/string-width/download/string-width-1.0.2.tgz",
-      "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
-      "requires": {
-        "code-point-at": "^1.0.0",
-        "is-fullwidth-code-point": "^1.0.0",
-        "strip-ansi": "^3.0.0"
-      }
-    },
     "string_decoder": {
       "version": "0.10.31",
       "resolved": "https://registry.npm.taobao.org/string_decoder/download/string_decoder-0.10.31.tgz",
       "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
     },
-    "strip-ansi": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npm.taobao.org/strip-ansi/download/strip-ansi-3.0.1.tgz",
-      "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
-      "requires": {
-        "ansi-regex": "^2.0.0"
-      }
-    },
     "strip-json-comments": {
       "version": "1.0.4",
       "resolved": "https://registry.npm.taobao.org/strip-json-comments/download/strip-json-comments-1.0.4.tgz",
@@ -885,25 +841,11 @@
       "resolved": "https://registry.npm.taobao.org/vlq/download/vlq-0.2.3.tgz",
       "integrity": "sha1-jz5DKM9jsVQMDWfhsneDhviXWyY="
     },
-    "window-size": {
-      "version": "0.1.4",
-      "resolved": "https://registry.npm.taobao.org/window-size/download/window-size-0.1.4.tgz",
-      "integrity": "sha1-+OGqHuWlPsW/FR/6CXQqatdpeHY="
-    },
     "wordwrap": {
       "version": "1.0.0",
       "resolved": "https://registry.npm.taobao.org/wordwrap/download/wordwrap-1.0.0.tgz",
       "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus="
     },
-    "wrap-ansi": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npm.taobao.org/wrap-ansi/download/wrap-ansi-2.1.0.tgz?cache=0&sync_timestamp=1571817290937&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fwrap-ansi%2Fdownload%2Fwrap-ansi-2.1.0.tgz",
-      "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
-      "requires": {
-        "string-width": "^1.0.1",
-        "strip-ansi": "^3.0.1"
-      }
-    },
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npm.taobao.org/wrappy/download/wrappy-1.0.2.tgz",
@@ -924,25 +866,6 @@
       "version": "4.0.2",
       "resolved": "https://registry.npm.taobao.org/xtend/download/xtend-4.0.2.tgz",
       "integrity": "sha1-u3J3n1+kZRhrH0OPZ0+jR/2121Q="
-    },
-    "y18n": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npm.taobao.org/y18n/download/y18n-3.2.1.tgz",
-      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE="
-    },
-    "yargs": {
-      "version": "3.32.0",
-      "resolved": "https://registry.npm.taobao.org/yargs/download/yargs-3.32.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fyargs%2Fdownload%2Fyargs-3.32.0.tgz",
-      "integrity": "sha1-AwiOnr+edWtpdRYR0qXvWRSCyZU=",
-      "requires": {
-        "camelcase": "^2.0.1",
-        "cliui": "^3.0.3",
-        "decamelize": "^1.1.1",
-        "os-locale": "^1.4.0",
-        "string-width": "^1.0.1",
-        "window-size": "^0.1.4",
-        "y18n": "^3.2.0"
-      }
     }
   }
 }
diff --git a/chapter4/node-serial-benchmark/package.json b/chapter4/node-serial-benchmark/package.json
index f49d8a5..0395d26 100644
--- a/chapter4/node-serial-benchmark/package.json
+++ b/chapter4/node-serial-benchmark/package.json
@@ -12,7 +12,7 @@
   "dependencies": {
     "jshint": "^2.8.0",
     "pomelo-protobuf": "^0.4.0",
-    "protobufjs": "^4.1.3",
+    "protobufjs": "^6.11.3",
     "protocol-buffers": "^3.1.3",
     "pson": "^2.0.0",
     "thrift": "^0.9.3"