diff --git a/package.json b/package.json
index 39ca25a..0842d01 100644
--- a/package.json
+++ b/package.json
@@ -63,7 +63,7 @@
     "cpx": "^1.5.0",
     "gh-pages": "^2.0.1",
     "hash.js": "^1.1.5",
-    "mkdirp": "^0.5.1",
+    "mkdirp": "^1.0.0",
     "npm-scripts-info": "^0.3.9",
     "nyc": "^13.1.0",
     "opn-cli": "^3.1.0",
diff --git a/yarn.lock b/yarn.lock
index 7e2a9d9..0a0ea84 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3599,6 +3599,11 @@ minimist@~0.0.1:
   dependencies:
     minimist "0.0.8"
 
+mkdirp@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.2.tgz#5ccd93437619ca7050b538573fc918327eba98fb"
+  integrity sha512-N2REVrJ/X/jGPfit2d7zea2J1pf7EAR5chIUcfHffAZ7gmlam5U65sAm76+o4ntQbSRdTjYf7qZz3chuHlwXEA==
+
 modify-values@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/modify-values/-/modify-values-1.0.0.tgz#e2b6cdeb9ce19f99317a53722f3dbf5df5eaaab2"