diff --git a/karma.conf.js b/karma.conf.js
index c82300a..8742937 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -27,7 +27,7 @@ module.exports = (config) => {
 
     // list of files / patterns to load in the browser
     files: [
-      'node_modules/@babel/polyfill/dist/polyfill.js',
+      'node_modules/regenerator-runtime/runtime.js',
       'src/*.ts',
       'src/**/*.ts',
       'test/*.ts',
diff --git a/package.json b/package.json
index b666b4e..a802652 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,6 @@
   ],
   "dependencies": {},
   "devDependencies": {
-    "@babel/polyfill": "^7.12.1",
     "@types/jasmine": "^3.5.10",
     "@types/karma": "^5.0.0",
     "@types/node": "^14.0.5",
@@ -57,6 +56,7 @@
     "karma-typescript-es6-transform": "^5.2.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^2.0.5",
+    "regenerator-runtime": "^0.13.7",
     "release-it": "^14.2.2",
     "ts-node": "^9.1.1",
     "tsconfig-paths": "^3.9.0",
diff --git a/yarn.lock b/yarn.lock
index 4b6dbbe..64ca665 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -691,14 +691,6 @@
     "@babel/helper-create-regexp-features-plugin" "^7.12.1"
     "@babel/helper-plugin-utils" "^7.10.4"
 
-"@babel/polyfill@^7.12.1":
-  version "7.12.1"
-  resolved "https://registry.yarnpkg.com/@babel/polyfill/-/polyfill-7.12.1.tgz#1f2d6371d1261bbd961f3c5d5909150e12d0bd96"
-  integrity sha512-X0pi0V6gxLi6lFZpGmeNa4zxtwEmCs42isWLNjZZDE0Y8yVfgu0T2OAHlzBbdYlqbW/YXVvoBHpATEM+goCj8g==
-  dependencies:
-    core-js "^2.6.5"
-    regenerator-runtime "^0.13.4"
-
 "@babel/preset-env@^7.11.0":
   version "7.12.10"
   resolved "https://registry.yarnpkg.com/@babel/preset-env/-/preset-env-7.12.10.tgz#ca981b95f641f2610531bd71948656306905e6ab"
@@ -1866,11 +1858,6 @@ core-js-compat@^3.8.0:
     browserslist "^4.15.0"
     semver "7.0.0"
 
-core-js@^2.6.5:
-  version "2.6.12"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.12.tgz#d9333dfa7b065e347cc5682219d6f690859cc2ec"
-  integrity sha512-Kb2wC0fvsWfQrgk8HU5lW6U/Lcs8+9aaYcy4ZFc6DDlo4nZ7n70dEgE5rtR0oG6ufKDUnrwfWL1mXR5ljDatrQ==
-
 cosmiconfig@7.0.0:
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-7.0.0.tgz#ef9b44d773959cae63ddecd122de23853b60f8d3"
@@ -4462,7 +4449,7 @@ regenerate@^1.4.0:
   resolved "https://registry.yarnpkg.com/regenerate/-/regenerate-1.4.2.tgz#b9346d8827e8f5a32f7ba29637d398b69014848a"
   integrity sha512-zrceR/XhGYU/d/opr2EKO7aRHUeiBI8qjtfHqADTwZd6Szfy16la6kqD0MIUs5z5hx6AaKa+PixpPrR289+I0A==
 
-regenerator-runtime@^0.13.4:
+regenerator-runtime@^0.13.4, regenerator-runtime@^0.13.7:
   version "0.13.7"
   resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.13.7.tgz#cac2dacc8a1ea675feaabaeb8ae833898ae46f55"
   integrity sha512-a54FxoJDIr27pgf7IgeQGxmqUNYrcV338lf/6gH456HZ/PhX+5BcwHXG9ajESmwe6WRO0tAzRUrRmNONWgkrew==