diff --git a/a11y-multiple-page-checker/github-action/package.json b/a11y-multiple-page-checker/github-action/package.json
index cc775ca..9a9b205 100644
--- a/a11y-multiple-page-checker/github-action/package.json
+++ b/a11y-multiple-page-checker/github-action/package.json
@@ -7,7 +7,7 @@
     "@babel/runtime": "^7.4.2",
     "esm": "^3.2.22",
     "minimist": "^1.2.0",
-    "es6-promise": "4.2.6",
+    "es6-promise": "4.2.8",
     "isomorphic-fetch": "2.2.1"
   },
   "devDependencies": {
diff --git a/a11y-multiple-page-checker/github-action/yarn.lock b/a11y-multiple-page-checker/github-action/yarn.lock
index 7d540fc..a2dd751 100644
--- a/a11y-multiple-page-checker/github-action/yarn.lock
+++ b/a11y-multiple-page-checker/github-action/yarn.lock
@@ -1515,10 +1515,10 @@ es-to-primitive@^1.2.0:
     is-date-object "^1.0.1"
     is-symbol "^1.0.2"
 
-es6-promise@4.2.6:
-  version "4.2.6"
-  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-4.2.6.tgz#b685edd8258886365ea62b57d30de28fadcd974f"
-  integrity sha512-aRVgGdnmW2OiySVPUC9e6m+plolMAJKjZnQlCwNSuK5yQ0JN61DZSO1X1Ufd1foqWRAlig0rhduTCHe7sVtK5Q==
+es6-promise@4.2.8:
+  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==
 
 escape-string-regexp@^1.0.5:
   version "1.0.5"