diff --git a/package-lock.json b/package-lock.json
index d808830a..079571e6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "oidc-client",
-  "version": "1.10.0",
+  "version": "1.10.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -978,6 +978,12 @@
         "regenerator-runtime": "^0.10.5"
       },
       "dependencies": {
+        "core-js": {
+          "version": "2.6.11",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.11.tgz",
+          "integrity": "sha512-5wjnpaT/3dV+XB4borEsnAYQchn00XSgTAWKDkEqv+K8KevjbzmofK6hfJ9TZIlpj2N0xQpazy7PiRQiWHqzWg==",
+          "dev": true
+        },
         "regenerator-runtime": {
           "version": "0.10.5",
           "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.10.5.tgz",
@@ -1031,6 +1037,14 @@
         "lodash": "^4.17.4",
         "mkdirp": "^0.5.1",
         "source-map-support": "^0.4.15"
+      },
+      "dependencies": {
+        "core-js": {
+          "version": "2.6.11",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.11.tgz",
+          "integrity": "sha512-5wjnpaT/3dV+XB4borEsnAYQchn00XSgTAWKDkEqv+K8KevjbzmofK6hfJ9TZIlpj2N0xQpazy7PiRQiWHqzWg==",
+          "dev": true
+        }
       }
     },
     "babel-runtime": {
@@ -1041,6 +1055,14 @@
       "requires": {
         "core-js": "^2.4.0",
         "regenerator-runtime": "^0.11.0"
+      },
+      "dependencies": {
+        "core-js": {
+          "version": "2.6.11",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.11.tgz",
+          "integrity": "sha512-5wjnpaT/3dV+XB4borEsnAYQchn00XSgTAWKDkEqv+K8KevjbzmofK6hfJ9TZIlpj2N0xQpazy7PiRQiWHqzWg==",
+          "dev": true
+        }
       }
     },
     "babel-template": {
@@ -1856,9 +1878,9 @@
       }
     },
     "core-js": {
-      "version": "2.6.4",
-      "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.4.tgz",
-      "integrity": "sha512-05qQ5hXShcqGkPZpXEFLIpxayZscVD2kuMBZewxiIPPEagukO4mqgPA9CWhUvFBJfy3ODdK2p9xyHh7FTU9/7A=="
+      "version": "3.6.5",
+      "resolved": "https://registry.npmjs.org/core-js/-/core-js-3.6.5.tgz",
+      "integrity": "sha512-vZVEEwZoIsI+vPEuoF9Iqf5H7/M3eeQqWlQnYa8FSKKePuYTf5MWnxb5SDAzCa60b3JBRS5g9b+Dq7b1y/RCrA=="
     },
     "core-util-is": {
       "version": "1.0.2",
diff --git a/package.json b/package.json
index e4d3ee26..86a13f77 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
   "homepage": "https://github.com/IdentityModel/oidc-client-js",
   "dependencies": {
     "uuid": "^3.3.2",
-    "core-js": "^2.6.4",
+    "core-js": "^3.6.5",
     "crypto-js": "^3.1.9-1",
     "base64-js": "^1.3.0"
   },
diff --git a/polyfills.js b/polyfills.js
index a53f49c3..e1963772 100644
--- a/polyfills.js
+++ b/polyfills.js
@@ -4,10 +4,10 @@
 // avoid modifying browser globals (potential for interop bugs with other libraries
 // on the page that might be polyfilling ES6 features)
 
-import 'core-js/es6/promise';
-import 'core-js/fn/function/bind';
-import 'core-js/fn/object/assign';
-import 'core-js/fn/array/find';
-import 'core-js/fn/array/some';
-import 'core-js/fn/array/is-array';
-import 'core-js/fn/array/splice';
+import 'core-js/features/promise';
+import 'core-js/features/function/bind';
+import 'core-js/features/object/assign';
+import 'core-js/features/array/find';
+import 'core-js/features/array/some';
+import 'core-js/features/array/is-array';
+import 'core-js/features/array/splice';