diff --git a/.travis.yml b/.travis.yml
index e4c0029..d976862 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,4 @@
+dist: bionic
 language: node_js
 node_js:
   - "10"
@@ -6,8 +7,9 @@ node_js:
   - "13"
 cache:
   yarn: false
+  npm: false
 script:
   - yarn run build
   - yarn run test
-  - cd example/browser && npm install && npm run build
-  - cd ../../example/typescript && npm install && npm run build
+  - cd example/browser && rm -rf node_modules && npm install && npm run build
+  - cd ../../example/typescript && rm -rf node_modules && npm install && npm run build
diff --git a/example/browser/package-lock.json b/example/browser/package-lock.json
index 930a7f9..5c9903c 100644
--- a/example/browser/package-lock.json
+++ b/example/browser/package-lock.json
@@ -2850,11 +2850,11 @@
         "@types/oauth": "^0.9.0",
         "@types/ws": "^7.2.0",
         "axios": "^0.19.0",
-        "https-proxy-agent": "^4.0.0",
+        "https-proxy-agent": "^5.0.0",
         "moment": "^2.24.0",
         "oauth": "^0.9.15",
-        "socks-proxy-agent": "github:h3poteto/node-socks-proxy-agent#master",
-        "typescript": "3.7.5",
+        "socks-proxy-agent": "^5.0.0",
+        "typescript": "3.8.3",
         "ws": "^7.2.1"
       },
       "dependencies": {
@@ -7675,8 +7675,8 @@
           }
         },
         "socks-proxy-agent": {
-          "version": "github:h3poteto/node-socks-proxy-agent#master",
-          "from": "github:h3poteto/node-socks-proxy-agent#master",
+          "version": "4.0.2",
+          "resolved": "github:h3poteto/node-socks-proxy-agent#master",
           "requires": {
             "agent-base": "~4.2.1",
             "socks": "~2.3.2"
diff --git a/example/typescript/package-lock.json b/example/typescript/package-lock.json
index 3fee5c4..020ebb8 100644
--- a/example/typescript/package-lock.json
+++ b/example/typescript/package-lock.json
@@ -75,11 +75,11 @@
         "@types/oauth": "^0.9.0",
         "@types/ws": "^7.2.0",
         "axios": "^0.19.0",
-        "https-proxy-agent": "^4.0.0",
+        "https-proxy-agent": "^5.0.0",
         "moment": "^2.24.0",
         "oauth": "^0.9.15",
-        "socks-proxy-agent": "github:h3poteto/node-socks-proxy-agent#master",
-        "typescript": "3.8.2",
+        "socks-proxy-agent": "^5.0.0",
+        "typescript": "3.8.3",
         "uuid": "^7.0.2",
         "ws": "^7.2.1"
       },
@@ -865,9 +865,12 @@
           "integrity": "sha512-7evsyfH1cLOCdAzZAd43Cic04yKydNx0cF+7tiA19p1XnLLPU4dpCQOqpjqwokFe//vS0QqfqqjCS2JkiIs0cA=="
         },
         "agent-base": {
-          "version": "5.1.1",
-          "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-5.1.1.tgz",
-          "integrity": "sha512-TMeqbNl2fMW0nMjTEPOwe3J/PRFP4vqeoNuQMG0HlMrtm5QxKqdvAkZ1pRBQ/ulIyDD5Yq0nJ7YbdD8ey0TO3g=="
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.0.tgz",
+          "integrity": "sha512-j1Q7cSCqN+AwrmDd+pzgqc0/NpC655x2bUf5ZjRIO77DcNBFmh+OgRNzF6OKdCC9RSCb19fGd99+bhXFdkRNqw==",
+          "requires": {
+            "debug": "4"
+          }
         },
         "ajv": {
           "version": "6.10.2",
@@ -1617,19 +1620,6 @@
             "is-symbol": "^1.0.2"
           }
         },
-        "es6-promise": {
-          "version": "4.2.8",
-          "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-4.2.8.tgz",
-          "integrity": "sha512-HJDGx5daxeIvxdBxvG2cb9g4tEvwIk3i8+nhX0yGrYmZUzbkdg8QbDevheDB8gd0//uPj4c1EQua8Q+MViT0/w=="
-        },
-        "es6-promisify": {
-          "version": "5.0.0",
-          "resolved": "https://registry.npmjs.org/es6-promisify/-/es6-promisify-5.0.0.tgz",
-          "integrity": "sha1-UQnWLz5W6pZ8S2NQWu8IKRyKUgM=",
-          "requires": {
-            "es6-promise": "^4.0.3"
-          }
-        },
         "escape-string-regexp": {
           "version": "1.0.5",
           "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
@@ -2457,11 +2447,11 @@
           }
         },
         "https-proxy-agent": {
-          "version": "4.0.0",
-          "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-4.0.0.tgz",
-          "integrity": "sha512-zoDhWrkR3of1l9QAL8/scJZyLu8j/gBkcwcaQOZh7Gyh/+uJQzGVETdgT30akuwkpL8HTRfssqI3BZuV18teDg==",
+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.0.tgz",
+          "integrity": "sha512-EkYm5BcKUGiduxzSt3Eppko+PiNWNEpa4ySk9vTC6wDsQJW9rHSa+UhGNJoRYp7bz6Ht1eaRIa6QaJqO5rCFbA==",
           "requires": {
-            "agent-base": "5",
+            "agent-base": "6",
             "debug": "4"
           }
         },
@@ -4843,9 +4833,9 @@
           }
         },
         "smart-buffer": {
-          "version": "4.0.2",
-          "resolved": "https://registry.npmjs.org/smart-buffer/-/smart-buffer-4.0.2.tgz",
-          "integrity": "sha512-JDhEpTKzXusOqXZ0BUIdH+CjFdO/CR3tLlf5CN34IypI+xMmXW1uB16OOY8z3cICbJlDAVJzNbwBhNO0wt9OAw=="
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/smart-buffer/-/smart-buffer-4.1.0.tgz",
+          "integrity": "sha512-iVICrxOzCynf/SNaBQCw34eM9jROU/s5rzIhpOvzhzuYHfJR/DhZfDkXiZSgKXfgv26HT3Yni3AV/DGw0cGnnw=="
         },
         "snapdragon": {
           "version": "0.8.2",
@@ -4906,30 +4896,22 @@
           }
         },
         "socks": {
-          "version": "2.3.2",
-          "resolved": "https://registry.npmjs.org/socks/-/socks-2.3.2.tgz",
-          "integrity": "sha512-pCpjxQgOByDHLlNqlnh/mNSAxIUkyBBuwwhTcV+enZGbDaClPvHdvm6uvOwZfFJkam7cGhBNbb4JxiP8UZkRvQ==",
+          "version": "2.3.3",
+          "resolved": "https://registry.npmjs.org/socks/-/socks-2.3.3.tgz",
+          "integrity": "sha512-o5t52PCNtVdiOvzMry7wU4aOqYWL0PeCXRWBEiJow4/i/wr+wpsJQ9awEu1EonLIqsfGd5qSgDdxEOvCdmBEpA==",
           "requires": {
-            "ip": "^1.1.5",
-            "smart-buffer": "4.0.2"
+            "ip": "1.1.5",
+            "smart-buffer": "^4.1.0"
           }
         },
         "socks-proxy-agent": {
-          "version": "github:h3poteto/node-socks-proxy-agent#5be42d4a3f98c5a156d713ea88a54b825f26d1f3",
-          "from": "github:h3poteto/node-socks-proxy-agent#master",
+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/socks-proxy-agent/-/socks-proxy-agent-5.0.0.tgz",
+          "integrity": "sha512-lEpa1zsWCChxiynk+lCycKuC502RxDWLKJZoIhnxrWNjLSDGYRFflHA1/228VkRcnv9TIb8w98derGbpKxJRgA==",
           "requires": {
-            "agent-base": "~4.2.1",
-            "socks": "~2.3.2"
-          },
-          "dependencies": {
-            "agent-base": {
-              "version": "4.2.1",
-              "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-4.2.1.tgz",
-              "integrity": "sha512-JVwXMr9nHYTUXsBFKUqhJwvlcYU/blreOEUkhNR2eXZIvwd+c+o5V4MgDPKWnMS/56awN3TRzIP+KoPn+roQtg==",
-              "requires": {
-                "es6-promisify": "^5.0.0"
-              }
-            }
+            "agent-base": "6",
+            "debug": "4",
+            "socks": "^2.3.3"
           }
         },
         "source-map": {
@@ -5459,9 +5441,9 @@
           }
         },
         "typescript": {
-          "version": "3.8.2",
-          "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.2.tgz",
-          "integrity": "sha512-EgOVgL/4xfVrCMbhYKUQTdF37SQn4Iw73H5BgCrF1Abdun7Kwy/QZsE/ssAy0y4LxBbvua3PIbFsbRczWWnDdQ=="
+          "version": "3.8.3",
+          "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+          "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
         },
         "uglify-js": {
           "version": "3.7.2",
diff --git a/package.json b/package.json
index 32f8296..94bdf02 100644
--- a/package.json
+++ b/package.json
@@ -55,10 +55,10 @@
     "@types/oauth": "^0.9.0",
     "@types/ws": "^7.2.0",
     "axios": "^0.19.0",
-    "https-proxy-agent": "^4.0.0",
+    "https-proxy-agent": "^5.0.0",
     "moment": "^2.24.0",
     "oauth": "^0.9.15",
-    "socks-proxy-agent": "h3poteto/node-socks-proxy-agent#master",
+    "socks-proxy-agent": "^5.0.0",
     "typescript": "3.8.3",
     "uuid": "^7.0.2",
     "ws": "^7.2.1"
diff --git a/src/proxy_config.ts b/src/proxy_config.ts
index cda4e7d..e4b3d52 100644
--- a/src/proxy_config.ts
+++ b/src/proxy_config.ts
@@ -1,5 +1,5 @@
-import HttpsProxyAgent from 'https-proxy-agent'
-import SocksProxyAgent from 'socks-proxy-agent'
+import createHttpsProxyAgent, { HttpsProxyAgent } from 'https-proxy-agent'
+import createSocksProxyAgent, { SocksProxyAgent } from 'socks-proxy-agent'
 
 export type ProxyConfig = {
   host: string
@@ -20,16 +20,18 @@ const proxyAgent = (proxyConfig: ProxyConfig): HttpsProxyAgent | SocksProxyAgent
   }
   switch (proxyConfig.protocol) {
     case 'http':
-    case 'https':
-      const httpsAgent = new HttpsProxyAgent(`${proxyConfig.protocol}://${auth}${proxyConfig.host}:${proxyConfig.port}`)
+    case 'https': {
+      const httpsAgent = createHttpsProxyAgent(`${proxyConfig.protocol}://${auth}${proxyConfig.host}:${proxyConfig.port}`)
       return httpsAgent
+    }
     case 'socks4':
     case 'socks4a':
     case 'socks5':
     case 'socks5h':
-    case 'socks':
-      const socksAgent = new SocksProxyAgent(`${proxyConfig.protocol}://${auth}${proxyConfig.host}:${proxyConfig.port}`)
+    case 'socks': {
+      const socksAgent = createSocksProxyAgent(`${proxyConfig.protocol}://${auth}${proxyConfig.host}:${proxyConfig.port}`)
       return socksAgent
+    }
     default:
       throw new ProxyProtocolError('protocol is not accepted')
   }
diff --git a/yarn.lock b/yarn.lock
index 809c4e6..0ee4d32 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -665,17 +665,12 @@ acorn@^7.1.0:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.1.0.tgz#949d36f2c292535da602283586c2477c57eb2d6c"
   integrity sha512-kL5CuoXA/dgxlBbVrflsflzQ3PAas7RYZB52NOm/6839iVYJgKMJ3cQJD+t2i5+qFa8h3MDpEOJiS64E8JLnSQ==
 
-agent-base@5:
-  version "5.1.1"
-  resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-5.1.1.tgz#e8fb3f242959db44d63be665db7a8e739537a32c"
-  integrity sha512-TMeqbNl2fMW0nMjTEPOwe3J/PRFP4vqeoNuQMG0HlMrtm5QxKqdvAkZ1pRBQ/ulIyDD5Yq0nJ7YbdD8ey0TO3g==
-
-agent-base@~4.2.1:
-  version "4.2.1"
-  resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-4.2.1.tgz#d89e5999f797875674c07d87f260fc41e83e8ca9"
-  integrity sha512-JVwXMr9nHYTUXsBFKUqhJwvlcYU/blreOEUkhNR2eXZIvwd+c+o5V4MgDPKWnMS/56awN3TRzIP+KoPn+roQtg==
+agent-base@6:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-6.0.0.tgz#5d0101f19bbfaed39980b22ae866de153b93f09a"
+  integrity sha512-j1Q7cSCqN+AwrmDd+pzgqc0/NpC655x2bUf5ZjRIO77DcNBFmh+OgRNzF6OKdCC9RSCb19fGd99+bhXFdkRNqw==
   dependencies:
-    es6-promisify "^5.0.0"
+    debug "4"
 
 ajv@^6.10.0, ajv@^6.10.2, ajv@^6.5.5:
   version "6.10.2"
@@ -1391,18 +1386,6 @@ es-to-primitive@^1.2.1:
     is-date-object "^1.0.1"
     is-symbol "^1.0.2"
 
-es6-promise@^4.0.3:
-  version "4.2.8"
-  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-4.2.8.tgz#4eb21594c972bc40553d276e510539143db53e0a"
-  integrity sha512-HJDGx5daxeIvxdBxvG2cb9g4tEvwIk3i8+nhX0yGrYmZUzbkdg8QbDevheDB8gd0//uPj4c1EQua8Q+MViT0/w==
-
-es6-promisify@^5.0.0:
-  version "5.0.0"
-  resolved "https://registry.yarnpkg.com/es6-promisify/-/es6-promisify-5.0.0.tgz#5109d62f3e56ea967c4b63505aef08291c8a5203"
-  integrity sha1-UQnWLz5W6pZ8S2NQWu8IKRyKUgM=
-  dependencies:
-    es6-promise "^4.0.3"
-
 escape-string-regexp@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
@@ -2089,12 +2072,12 @@ http-signature@~1.2.0:
     jsprim "^1.2.2"
     sshpk "^1.7.0"
 
-https-proxy-agent@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/https-proxy-agent/-/https-proxy-agent-4.0.0.tgz#702b71fb5520a132a66de1f67541d9e62154d82b"
-  integrity sha512-zoDhWrkR3of1l9QAL8/scJZyLu8j/gBkcwcaQOZh7Gyh/+uJQzGVETdgT30akuwkpL8HTRfssqI3BZuV18teDg==
+https-proxy-agent@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/https-proxy-agent/-/https-proxy-agent-5.0.0.tgz#e2a90542abb68a762e0a0850f6c9edadfd8506b2"
+  integrity sha512-EkYm5BcKUGiduxzSt3Eppko+PiNWNEpa4ySk9vTC6wDsQJW9rHSa+UhGNJoRYp7bz6Ht1eaRIa6QaJqO5rCFbA==
   dependencies:
-    agent-base "5"
+    agent-base "6"
     debug "4"
 
 human-signals@^1.1.1:
@@ -2182,7 +2165,7 @@ ip-regex@^2.1.0:
   resolved "https://registry.yarnpkg.com/ip-regex/-/ip-regex-2.1.0.tgz#fa78bf5d2e6913c911ce9f819ee5146bb6d844e9"
   integrity sha1-+ni/XS5pE8kRzp+BnuUUa7bYROk=
 
-ip@^1.1.5:
+ip@1.1.5:
   version "1.1.5"
   resolved "https://registry.yarnpkg.com/ip/-/ip-1.1.5.tgz#bdded70114290828c0a039e72ef25f5aaec4354a"
   integrity sha1-vd7XARQpCCjAoDnnLvJfWq7ENUo=
@@ -2778,15 +2761,7 @@ jest-watcher@^25.2.0:
     jest-util "^25.2.0"
     string-length "^3.1.0"
 
-jest-worker@^25.1.0:
-  version "25.2.0"
-  resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-25.2.0.tgz#2716fbf74fcae7d713778f60187fd1f96fa09d1a"
-  integrity sha512-oGzUBnVnRdb51Aru3XFNa0zOafAIEerqZoQow+Vy8LDDiy12dvSrOeVeO8oNrxCMkGG4JtXqX9IPC93JJiAk+g==
-  dependencies:
-    merge-stream "^2.0.0"
-    supports-color "^7.0.0"
-
-jest-worker@^25.2.0:
+jest-worker@^25.1.0, jest-worker@^25.2.0:
   version "25.2.0"
   resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-25.2.0.tgz#2716fbf74fcae7d713778f60187fd1f96fa09d1a"
   integrity sha512-oGzUBnVnRdb51Aru3XFNa0zOafAIEerqZoQow+Vy8LDDiy12dvSrOeVeO8oNrxCMkGG4JtXqX9IPC93JJiAk+g==
@@ -3899,10 +3874,10 @@ slice-ansi@^2.1.0:
     astral-regex "^1.0.0"
     is-fullwidth-code-point "^2.0.0"
 
-smart-buffer@4.0.2:
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/smart-buffer/-/smart-buffer-4.0.2.tgz#5207858c3815cc69110703c6b94e46c15634395d"
-  integrity sha512-JDhEpTKzXusOqXZ0BUIdH+CjFdO/CR3tLlf5CN34IypI+xMmXW1uB16OOY8z3cICbJlDAVJzNbwBhNO0wt9OAw==
+smart-buffer@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/smart-buffer/-/smart-buffer-4.1.0.tgz#91605c25d91652f4661ea69ccf45f1b331ca21ba"
+  integrity sha512-iVICrxOzCynf/SNaBQCw34eM9jROU/s5rzIhpOvzhzuYHfJR/DhZfDkXiZSgKXfgv26HT3Yni3AV/DGw0cGnnw==
 
 snapdragon-node@^2.0.1:
   version "2.1.1"
@@ -3934,20 +3909,22 @@ snapdragon@^0.8.1:
     source-map-resolve "^0.5.0"
     use "^3.1.0"
 
-socks-proxy-agent@h3poteto/node-socks-proxy-agent#master:
-  version "4.0.2"
-  resolved "https://codeload.github.com/h3poteto/node-socks-proxy-agent/tar.gz/5be42d4a3f98c5a156d713ea88a54b825f26d1f3"
+socks-proxy-agent@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/socks-proxy-agent/-/socks-proxy-agent-5.0.0.tgz#7c0f364e7b1cf4a7a437e71253bed72e9004be60"
+  integrity sha512-lEpa1zsWCChxiynk+lCycKuC502RxDWLKJZoIhnxrWNjLSDGYRFflHA1/228VkRcnv9TIb8w98derGbpKxJRgA==
   dependencies:
-    agent-base "~4.2.1"
-    socks "~2.3.2"
+    agent-base "6"
+    debug "4"
+    socks "^2.3.3"
 
-socks@~2.3.2:
-  version "2.3.2"
-  resolved "https://registry.yarnpkg.com/socks/-/socks-2.3.2.tgz#ade388e9e6d87fdb11649c15746c578922a5883e"
-  integrity sha512-pCpjxQgOByDHLlNqlnh/mNSAxIUkyBBuwwhTcV+enZGbDaClPvHdvm6uvOwZfFJkam7cGhBNbb4JxiP8UZkRvQ==
+socks@^2.3.3:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/socks/-/socks-2.3.3.tgz#01129f0a5d534d2b897712ed8aceab7ee65d78e3"
+  integrity sha512-o5t52PCNtVdiOvzMry7wU4aOqYWL0PeCXRWBEiJow4/i/wr+wpsJQ9awEu1EonLIqsfGd5qSgDdxEOvCdmBEpA==
   dependencies:
-    ip "^1.1.5"
-    smart-buffer "4.0.2"
+    ip "1.1.5"
+    smart-buffer "^4.1.0"
 
 source-map-resolve@^0.5.0:
   version "0.5.2"