diff --git a/package-lock.json b/package-lock.json
index 88d88bc..44a04df 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,6 +18,7 @@
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+        "semver": "^7.3.5"
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+      "resolved": "https://registry.npmjs.org/commander/-/commander-7.2.0.tgz",
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+      "dev": true,
+      "engines": {
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+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.7.tgz",
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+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
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+    "node_modules/handlebars": {
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+      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.7.7.tgz",
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+      "dependencies": {
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+        "neo-async": "^2.6.0",
+        "source-map": "^0.6.1",
+        "wordwrap": "^1.0.0"
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+      "bin": {
+        "handlebars": "bin/handlebars"
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+      "engines": {
+        "node": ">=0.4.7"
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@@ -2325,6 +2408,12 @@
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+      "resolved": "https://registry.npmjs.org/neo-async/-/neo-async-2.6.2.tgz",
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+    },
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@@ -2332,11 +2421,22 @@
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+      "version": "2.6.7",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.7.tgz",
+      "integrity": "sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==",
+      "dependencies": {
+        "whatwg-url": "^5.0.0"
+      },
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         "node": "4.x || >=6.0.0"
+      },
+      "peerDependencies": {
+        "encoding": "^0.1.0"
+      },
+      "peerDependenciesMeta": {
+        "encoding": {
+          "optional": true
+        }
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     "node_modules/node-machine-id": {
@@ -2611,6 +2711,18 @@
         "node": ">=6"
       }
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+    "node_modules/parse-github-url": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/parse-github-url/-/parse-github-url-1.0.2.tgz",
+      "integrity": "sha512-kgBf6avCbO3Cn6+RnzRGLkUsv4ZVqv/VfAYkRsyBcgkshNvVBkRn1FEZcW0Jb+npXQWm2vHPnnOqFteZxRRGNw==",
+      "dev": true,
+      "bin": {
+        "parse-github-url": "cli.js"
+      },
+      "engines": {
+        "node": ">=0.10.0"
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       "resolved": "https://registry.npmjs.org/parse-json/-/parse-json-2.2.0.tgz",
@@ -3188,6 +3300,15 @@
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+    "node_modules/source-map": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
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+      "dev": true,
+      "engines": {
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@@ -3588,6 +3709,11 @@
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+    "node_modules/tr46": {
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+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o="
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@@ -3648,6 +3774,19 @@
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+    "node_modules/uglify-js": {
+      "version": "3.15.5",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.15.5.tgz",
+      "integrity": "sha512-hNM5q5GbBRB5xB+PMqVRcgYe4c8jbyZ1pzZhS6jbq54/4F2gFK869ZheiE5A8/t+W5jtTNpWef/5Q9zk639FNQ==",
+      "dev": true,
+      "optional": true,
+      "bin": {
+        "uglifyjs": "bin/uglifyjs"
+      },
+      "engines": {
+        "node": ">=0.8.0"
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@@ -3747,6 +3886,20 @@
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+    "node_modules/webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE="
+    },
+    "node_modules/whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha1-lmRU6HZUYuN2RNNib2dCzotwll0=",
+      "dependencies": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
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       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
@@ -3823,6 +3976,12 @@
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+    "node_modules/wordwrap": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
+      "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
+      "dev": true
+    },
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@@ -4104,6 +4263,51 @@
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       "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k="
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+    "auto-changelog": {
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/auto-changelog/-/auto-changelog-2.4.0.tgz",
+      "integrity": "sha512-vh17hko1c0ItsEcw6m7qPRf3m45u+XK5QyCrrBFViElZ8jnKrPC1roSznrd1fIB/0vR/zawdECCRJtTuqIXaJw==",
+      "dev": true,
+      "requires": {
+        "commander": "^7.2.0",
+        "handlebars": "^4.7.7",
+        "node-fetch": "^2.6.1",
+        "parse-github-url": "^1.0.2",
+        "semver": "^7.3.5"
+      },
+      "dependencies": {
+        "commander": {
+          "version": "7.2.0",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-7.2.0.tgz",
+          "integrity": "sha512-QrWXB+ZQSVPmIWIhtEO9H+gwHaMGYiF5ChvoJ+K9ZGHG/sVsa6yiesAD1GC/x46sET00Xlwo1u49RVVVzvcSkw==",
+          "dev": true
+        },
+        "lru-cache": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+          "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+          "dev": true,
+          "requires": {
+            "yallist": "^4.0.0"
+          }
+        },
+        "semver": {
+          "version": "7.3.7",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.7.tgz",
+          "integrity": "sha512-QlYTucUYOews+WeEujDoEGziz4K6c47V/Bd+LjSSYcA94p+DmINdf7ncaUinThfvZyu13lN9OY1XDxt8C0Tw0g==",
+          "dev": true,
+          "requires": {
+            "lru-cache": "^6.0.0"
+          }
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+        "yallist": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+          "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
+          "dev": true
+        }
+      }
+    },
     "aws-sign2": {
       "version": "0.7.0",
       "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
@@ -5108,6 +5312,19 @@
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       "dev": true
     },
+    "handlebars": {
+      "version": "4.7.7",
+      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.7.7.tgz",
+      "integrity": "sha512-aAcXm5OAfE/8IXkcZvCepKU3VzW1/39Fb5ZuqMtgI/hT8X2YgoMvBY5dLhq/cpOvw7Lk1nK/UF71aLG/ZnVYRA==",
+      "dev": true,
+      "requires": {
+        "minimist": "^1.2.5",
+        "neo-async": "^2.6.0",
+        "source-map": "^0.6.1",
+        "uglify-js": "^3.1.4",
+        "wordwrap": "^1.0.0"
+      }
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       "resolved": "https://registry.npmjs.org/har-schema/-/har-schema-2.0.0.tgz",
@@ -5708,6 +5925,12 @@
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     },
+    "neo-async": {
+      "version": "2.6.2",
+      "resolved": "https://registry.npmjs.org/neo-async/-/neo-async-2.6.2.tgz",
+      "integrity": "sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw==",
+      "dev": true
+    },
     "nice-try": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/nice-try/-/nice-try-1.0.5.tgz",
@@ -5715,9 +5938,12 @@
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-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.0.tgz",
-      "integrity": "sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA=="
+      "version": "2.6.7",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.7.tgz",
+      "integrity": "sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==",
+      "requires": {
+        "whatwg-url": "^5.0.0"
+      }
     },
     "node-machine-id": {
       "version": "1.1.12",
@@ -5920,6 +6146,12 @@
         "callsites": "^3.0.0"
       }
     },
+    "parse-github-url": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/parse-github-url/-/parse-github-url-1.0.2.tgz",
+      "integrity": "sha512-kgBf6avCbO3Cn6+RnzRGLkUsv4ZVqv/VfAYkRsyBcgkshNvVBkRn1FEZcW0Jb+npXQWm2vHPnnOqFteZxRRGNw==",
+      "dev": true
+    },
     "parse-json": {
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       "resolved": "https://registry.npmjs.org/parse-json/-/parse-json-2.2.0.tgz",
@@ -6366,6 +6598,12 @@
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+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
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+      "dev": true
+    },
     "spdx-correct": {
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       "resolved": "https://registry.npmjs.org/spdx-correct/-/spdx-correct-3.1.0.tgz",
@@ -6678,6 +6916,11 @@
         "punycode": "^2.1.1"
       }
     },
+    "tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o="
+    },
     "triple-beam": {
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       "resolved": "https://registry.npmjs.org/triple-beam/-/triple-beam-1.3.0.tgz",
@@ -6726,6 +6969,13 @@
         "mime-types": "~2.1.24"
       }
     },
+    "uglify-js": {
+      "version": "3.15.5",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.15.5.tgz",
+      "integrity": "sha512-hNM5q5GbBRB5xB+PMqVRcgYe4c8jbyZ1pzZhS6jbq54/4F2gFK869ZheiE5A8/t+W5jtTNpWef/5Q9zk639FNQ==",
+      "dev": true,
+      "optional": true
+    },
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       "resolved": "https://registry.npmjs.org/uid-safe/-/uid-safe-2.1.5.tgz",
@@ -6806,6 +7056,20 @@
         "extsprintf": "^1.2.0"
       }
     },
+    "webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE="
+    },
+    "whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha1-lmRU6HZUYuN2RNNib2dCzotwll0=",
+      "requires": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
+    },
     "which": {
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       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
@@ -6866,6 +7130,12 @@
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       "dev": true
     },
+    "wordwrap": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
+      "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
+      "dev": true
+    },
     "wrappy": {
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diff --git a/package.json b/package.json
index e72b9c6..b9c4d14 100644
--- a/package.json
+++ b/package.json
@@ -5,6 +5,7 @@
   "main": "index.js",
   "scripts": {
     "test": "mocha",
+    "version": "auto-changelog -p && git add CHANGELOG.md",
     "postversion": "git push && git push --tags"
   },
   "repository": {
@@ -20,6 +21,7 @@
   "author": "Adhidarma Hadiwinoto <me@adhisimon.org>",
   "license": "ISC",
   "devDependencies": {
+    "auto-changelog": "^2.4.0",
     "eslint": "^6.8.0",
     "eslint-config-airbnb-base": "^14.1.0",
     "eslint-plugin-import": "^2.20.2"