diff --git a/package.json b/package.json
index e7ca701..23ed882 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "toml": "^2.3.3"
   },
   "devDependencies": {
-    "@babel/register": "^7.0.0-beta.37",
+    "@babel/register": "^7.0.0-beta.40",
     "@nju33/postcss-preset": "^0.0.5",
     "autoprefixer": "^7.2.4",
     "ava": "^0.24.0",
diff --git a/yarn.lock b/yarn.lock
index 90d6789..7917504 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -69,11 +69,11 @@
   dependencies:
     "@babel/types" "7.0.0-beta.31"
 
-"@babel/register@^7.0.0-beta.37":
-  version "7.0.0-beta.37"
-  resolved "https://registry.yarnpkg.com/@babel/register/-/register-7.0.0-beta.37.tgz#961fbaa537b7fbfbffc7c293acef7460c714225b"
+"@babel/register@^7.0.0-beta.40":
+  version "7.0.0-beta.40"
+  resolved "https://registry.yarnpkg.com/@babel/register/-/register-7.0.0-beta.40.tgz#40df0bdbb2fe74a7c7b09af3d59b71c8cd53c4da"
   dependencies:
-    core-js "^2.4.0"
+    core-js "^2.5.3"
     find-cache-dir "^1.0.0"
     home-or-tmp "^3.0.0"
     lodash "^4.2.0"