diff --git a/package.json b/package.json
index 92cfd4d..5f31cb1 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "purifycss-webpack": "^0.7.0",
     "rimraf": "^2.6.2",
     "semver": "^5.4.1",
-    "shelljs": "^0.7.8",
+    "shelljs": "^0.8.5",
     "sw-precache-webpack-plugin": "^0.11.4",
     "uglify-es": "^3.1.3",
     "url-loader": "^0.6.2",
diff --git a/yarn.lock b/yarn.lock
index bd2a475..49190b4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4336,9 +4336,9 @@ shebang-regex@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-1.0.0.tgz#da42f49740c0b42db2ca9728571cb190c98efea3"
 
-shelljs@^0.7.8:
-  version "0.7.8"
-  resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.7.8.tgz#decbcf874b0d1e5fb72e14b164a9683048e9acb3"
+shelljs@^0.8.5:
+  version "0.8.5"
+  resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.8.5.tgz#de055408d8361bed66c669d2f000538ced8ee20c"
   dependencies:
     glob "^7.0.0"
     interpret "^1.0.0"