diff --git a/package-lock.json b/package-lock.json
index ada1582..c14821f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1148,6 +1148,14 @@
         "espower-location-detector": "^1.0.0",
         "espurify": "^1.6.0",
         "estraverse": "^4.1.1"
+      },
+      "dependencies": {
+        "core-js": {
+          "version": "2.6.5",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.5.tgz",
+          "integrity": "sha512-klh/kDpwX8hryYL14M9w/xei6vrv6sE8gTHDG7/T/+SEovB/G4ejwcfE/CBzO6Edsu+OETZMZ3wcX/EjUkrl5A==",
+          "dev": true
+        }
       }
     },
     "babel-plugin-syntax-async-functions": {
@@ -1712,6 +1720,12 @@
         "source-map-support": "^0.4.15"
       },
       "dependencies": {
+        "core-js": {
+          "version": "2.6.5",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.5.tgz",
+          "integrity": "sha512-klh/kDpwX8hryYL14M9w/xei6vrv6sE8gTHDG7/T/+SEovB/G4ejwcfE/CBzO6Edsu+OETZMZ3wcX/EjUkrl5A==",
+          "dev": true
+        },
         "source-map-support": {
           "version": "0.4.18",
           "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.4.18.tgz",
@@ -1731,6 +1745,14 @@
       "requires": {
         "core-js": "^2.4.0",
         "regenerator-runtime": "^0.11.0"
+      },
+      "dependencies": {
+        "core-js": {
+          "version": "2.6.5",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.5.tgz",
+          "integrity": "sha512-klh/kDpwX8hryYL14M9w/xei6vrv6sE8gTHDG7/T/+SEovB/G4ejwcfE/CBzO6Edsu+OETZMZ3wcX/EjUkrl5A==",
+          "dev": true
+        }
       }
     },
     "babel-template": {
@@ -2055,6 +2077,14 @@
         "deep-equal": "^1.0.0",
         "espurify": "^1.6.0",
         "estraverse": "^4.0.0"
+      },
+      "dependencies": {
+        "core-js": {
+          "version": "2.6.5",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.5.tgz",
+          "integrity": "sha512-klh/kDpwX8hryYL14M9w/xei6vrv6sE8gTHDG7/T/+SEovB/G4ejwcfE/CBzO6Edsu+OETZMZ3wcX/EjUkrl5A==",
+          "dev": true
+        }
       }
     },
     "call-signature": {
@@ -2392,9 +2422,9 @@
       "dev": true
     },
     "core-js": {
-      "version": "2.6.5",
-      "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.5.tgz",
-      "integrity": "sha512-klh/kDpwX8hryYL14M9w/xei6vrv6sE8gTHDG7/T/+SEovB/G4ejwcfE/CBzO6Edsu+OETZMZ3wcX/EjUkrl5A==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/core-js/-/core-js-3.0.0.tgz",
+      "integrity": "sha512-WBmxlgH2122EzEJ6GH8o9L/FeoUKxxxZ6q6VUxoTlsE4EvbTWKJb447eyVxTEuq0LpXjlq/kCB2qgBvsYRkLvQ==",
       "dev": true
     },
     "core-util-is": {
@@ -2922,6 +2952,14 @@
       "requires": {
         "call-signature": "0.0.2",
         "core-js": "^2.0.0"
+      },
+      "dependencies": {
+        "core-js": {
+          "version": "2.6.5",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.5.tgz",
+          "integrity": "sha512-klh/kDpwX8hryYL14M9w/xei6vrv6sE8gTHDG7/T/+SEovB/G4ejwcfE/CBzO6Edsu+OETZMZ3wcX/EjUkrl5A==",
+          "dev": true
+        }
       }
     },
     "end-of-stream": {
@@ -3037,6 +3075,14 @@
       "dev": true,
       "requires": {
         "core-js": "^2.0.0"
+      },
+      "dependencies": {
+        "core-js": {
+          "version": "2.6.5",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.5.tgz",
+          "integrity": "sha512-klh/kDpwX8hryYL14M9w/xei6vrv6sE8gTHDG7/T/+SEovB/G4ejwcfE/CBzO6Edsu+OETZMZ3wcX/EjUkrl5A==",
+          "dev": true
+        }
       }
     },
     "estraverse": {
diff --git a/package.json b/package.json
index 1a51fa4..7882999 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "@types/node": "^11.10.0",
     "@types/shelljs": "^0.8.3",
     "ava": "^1.2.1",
-    "core-js": "^2.6.5",
+    "core-js": "^3.0.0",
     "cross-env": "^5.2.0",
     "cross-var": "^1.1.0",
     "husky": "^1.3.1",