diff --git a/package-lock.json b/package-lock.json
index 8c1be0a..22f6375 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -176,7 +176,7 @@
     },
     "@sinonjs/formatio": {
       "version": "2.0.0",
-      "resolved": "http://registry.npmjs.org/@sinonjs/formatio/-/formatio-2.0.0.tgz",
+      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-2.0.0.tgz",
       "integrity": "sha512-ls6CAMA6/5gG+O/IdsBcblvnd8qcO/l1TYoNeAzp3wcISOxlPXQEus0mLcdwazEkWjaBdaJ3TaxmNgCLWwvWzg==",
       "dev": true,
       "requires": {
@@ -11458,9 +11458,9 @@
       "dev": true
     },
     "shelljs": {
-      "version": "0.7.8",
-      "resolved": "https://registry.npmjs.org/shelljs/-/shelljs-0.7.8.tgz",
-      "integrity": "sha1-3svPh0sNHl+3LhSxZKloMEjprLM=",
+      "version": "0.8.5",
+      "resolved": "https://registry.npmjs.org/shelljs/-/shelljs-0.8.5.tgz",
+      "integrity": "sha512-TiwcRcrkhHvbrZbnRcFYMLl30Dfov3HKqzp5tO5b4pt6G/SezKcYhmDg15zXVBswHmctSAQKznqNW2LO5tTDow==",
       "dev": true,
       "requires": {
         "glob": "^7.0.0",
diff --git a/package.json b/package.json
index 2da5c2d..94f5477 100644
--- a/package.json
+++ b/package.json
@@ -81,7 +81,7 @@
     "phantomjs-prebuilt": "^2.1.15",
     "rimraf": "^2.6.2",
     "semver": "^5.4.1",
-    "shelljs": "^0.7.8",
+    "shelljs": "^0.8.5",
     "sinon": "^4.0.1",
     "sinon-chai": "^2.14.0",
     "sw-precache-webpack-plugin": "^0.11.5",