diff --git a/package.json b/package.json
index 26fa7a1..0297001 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
   "homepage": "https://github.com/misund/hex-to-rgba#readme",
   "devDependencies": {
     "@babel/cli": "7.8.4",
-    "@babel/core": "7.8.7",
+    "@babel/core": "7.9.0",
     "@babel/preset-env": "7.9.0",
     "@babel/register": "7.9.0",
     "eslint": "6.8.0",
diff --git a/yarn.lock b/yarn.lock
index 93dfe18..ddac304 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -34,33 +34,34 @@
     invariant "^2.2.4"
     semver "^5.5.0"
 
-"@babel/core@7.8.7":
-  version "7.8.7"
-  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.8.7.tgz#b69017d221ccdeb203145ae9da269d72cf102f3b"
-  integrity sha512-rBlqF3Yko9cynC5CCFy6+K/w2N+Sq/ff2BPy+Krp7rHlABIr5epbA7OxVeKoMHB39LZOp1UY5SuLjy6uWi35yA==
+"@babel/core@7.9.0":
+  version "7.9.0"
+  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.9.0.tgz#ac977b538b77e132ff706f3b8a4dbad09c03c56e"
+  integrity sha512-kWc7L0fw1xwvI0zi8OKVBuxRVefwGOrKSQMvrQ3dW+bIIavBY3/NpXmpjMy7bQnLgwgzWQZ8TlM57YHpHNHz4w==
   dependencies:
     "@babel/code-frame" "^7.8.3"
-    "@babel/generator" "^7.8.7"
-    "@babel/helpers" "^7.8.4"
-    "@babel/parser" "^7.8.7"
+    "@babel/generator" "^7.9.0"
+    "@babel/helper-module-transforms" "^7.9.0"
+    "@babel/helpers" "^7.9.0"
+    "@babel/parser" "^7.9.0"
     "@babel/template" "^7.8.6"
-    "@babel/traverse" "^7.8.6"
-    "@babel/types" "^7.8.7"
+    "@babel/traverse" "^7.9.0"
+    "@babel/types" "^7.9.0"
     convert-source-map "^1.7.0"
     debug "^4.1.0"
     gensync "^1.0.0-beta.1"
-    json5 "^2.1.0"
+    json5 "^2.1.2"
     lodash "^4.17.13"
     resolve "^1.3.2"
     semver "^5.4.1"
     source-map "^0.5.0"
 
-"@babel/generator@^7.8.6", "@babel/generator@^7.8.7":
-  version "7.8.7"
-  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.8.7.tgz#870b3cf7984f5297998152af625c4f3e341400f7"
-  integrity sha512-DQwjiKJqH4C3qGiyQCAExJHoZssn49JTMJgZ8SANGgVFdkupcUhLOdkAeoC6kmHZCPfoDG5M0b6cFlSN5wW7Ew==
+"@babel/generator@^7.9.0":
+  version "7.9.0"
+  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.9.0.tgz#0f67adea4ec39dad6e63345f70eec33014d78c89"
+  integrity sha512-onl4Oy46oGCzymOXtKMQpI7VXtCbTSHK1kqBydZ6AmzuNcacEVqGk9tZtAS+48IA9IstZcDCgIg8hQKnb7suRw==
   dependencies:
-    "@babel/types" "^7.8.7"
+    "@babel/types" "^7.9.0"
     jsesc "^2.5.1"
     lodash "^4.17.13"
     source-map "^0.5.0"
@@ -264,14 +265,14 @@
     "@babel/traverse" "^7.8.3"
     "@babel/types" "^7.8.3"
 
-"@babel/helpers@^7.8.4":
-  version "7.8.4"
-  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.8.4.tgz#754eb3ee727c165e0a240d6c207de7c455f36f73"
-  integrity sha512-VPbe7wcQ4chu4TDQjimHv/5tj73qz88o12EPkO2ValS2QiQS/1F2SsjyIGNnAD0vF/nZS6Cf9i+vW6HIlnaR8w==
+"@babel/helpers@^7.9.0":
+  version "7.9.0"
+  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.9.0.tgz#ab2c1bc4821af766cab51d4868a5038874ea5a12"
+  integrity sha512-/9GvfYTCG1NWCNwDj9e+XlnSCmWW/r9T794Xi58vPF9WCcnZCAZ0kWLSn54oqP40SUvh1T2G6VwKmFO5AOlW3A==
   dependencies:
     "@babel/template" "^7.8.3"
-    "@babel/traverse" "^7.8.4"
-    "@babel/types" "^7.8.3"
+    "@babel/traverse" "^7.9.0"
+    "@babel/types" "^7.9.0"
 
 "@babel/highlight@^7.8.3":
   version "7.8.3"
@@ -282,10 +283,10 @@
     esutils "^2.0.2"
     js-tokens "^4.0.0"
 
-"@babel/parser@^7.8.6", "@babel/parser@^7.8.7":
-  version "7.8.7"
-  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.8.7.tgz#7b8facf95d25fef9534aad51c4ffecde1a61e26a"
-  integrity sha512-9JWls8WilDXFGxs0phaXAZgpxTZhSk/yOYH2hTHC0X1yC7Z78IJfvR1vJ+rmJKq3I35td2XzXzN6ZLYlna+r/A==
+"@babel/parser@^7.8.6", "@babel/parser@^7.9.0":
+  version "7.9.0"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.9.0.tgz#f821b32313f07ee570976d3f6238e8d2d66e0a8e"
+  integrity sha512-Iwyp00CZsypoNJcpXCbq3G4tcDgphtlMwMVrMhhZ//XBkqjXF7LW6V511yk0+pBX3ZwwGnPea+pTKNJiqA7pUg==
 
 "@babel/plugin-proposal-async-generator-functions@^7.8.3":
   version "7.8.3"
@@ -787,17 +788,17 @@
     "@babel/parser" "^7.8.6"
     "@babel/types" "^7.8.6"
 
-"@babel/traverse@^7.8.3", "@babel/traverse@^7.8.4", "@babel/traverse@^7.8.6":
-  version "7.8.6"
-  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.8.6.tgz#acfe0c64e1cd991b3e32eae813a6eb564954b5ff"
-  integrity sha512-2B8l0db/DPi8iinITKuo7cbPznLCEk0kCxDoB9/N6gGNg/gxOXiR/IcymAFPiBwk5w6TtQ27w4wpElgp9btR9A==
+"@babel/traverse@^7.8.3", "@babel/traverse@^7.8.6", "@babel/traverse@^7.9.0":
+  version "7.9.0"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.9.0.tgz#d3882c2830e513f4fe4cec9fe76ea1cc78747892"
+  integrity sha512-jAZQj0+kn4WTHO5dUZkZKhbFrqZE7K5LAQ5JysMnmvGij+wOdr+8lWqPeW0BcF4wFwrEXXtdGO7wcV6YPJcf3w==
   dependencies:
     "@babel/code-frame" "^7.8.3"
-    "@babel/generator" "^7.8.6"
+    "@babel/generator" "^7.9.0"
     "@babel/helper-function-name" "^7.8.3"
     "@babel/helper-split-export-declaration" "^7.8.3"
-    "@babel/parser" "^7.8.6"
-    "@babel/types" "^7.8.6"
+    "@babel/parser" "^7.9.0"
+    "@babel/types" "^7.9.0"
     debug "^4.1.0"
     globals "^11.1.0"
     lodash "^4.17.13"
@@ -3075,12 +3076,12 @@ json-stable-stringify-without-jsonify@^1.0.1:
   resolved "https://registry.yarnpkg.com/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz#9db7b59496ad3f3cfef30a75142d2d930ad72651"
   integrity sha1-nbe1lJatPzz+8wp1FC0tkwrXJlE=
 
-json5@^2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/json5/-/json5-2.1.0.tgz#e7a0c62c48285c628d20a10b85c89bb807c32850"
-  integrity sha512-8Mh9h6xViijj36g7Dxi+Y4S6hNGV96vcJZr/SrlHh1LR/pEn/8j/+qIBbs44YKl69Lrfctp4QD+AdWLTMqEZAQ==
+json5@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/json5/-/json5-2.1.2.tgz#43ef1f0af9835dd624751a6b7fa48874fb2d608e"
+  integrity sha512-MoUOQ4WdiN3yxhm7NEVJSJrieAo5hNSLQ5sj05OTRHPL9HOBy8u4Bu88jsC1jvqAdN+E1bJmsUcZH+1HQxliqQ==
   dependencies:
-    minimist "^1.2.0"
+    minimist "^1.2.5"
 
 jsx-ast-utils@^2.2.1, jsx-ast-utils@^2.2.3:
   version "2.2.3"