diff --git a/package.json b/package.json
index 5c8b329..59a913d 100644
--- a/package.json
+++ b/package.json
@@ -15,11 +15,11 @@
     "build:uncompressed:es5": "cross-env TS_CONFIG=tsconfig-es5.json webpack",
     "build:compressed:es5": "cross-env TS_CONFIG=tsconfig-es5.json NODE_ENV=production webpack",
     "build:definition-header:es5": "cross-env TS_CONFIG=tsconfig-es5.json node definition-header.js",
-    "build:es5": "npm run build:uncompressed:es5 && npm run build:compressed:es5 && npm run build:definition-header:es5",
+    "build:es5": "npm run --openssl-legacy-provider build:uncompressed:es5 && npm run --openssl-legacy-provider build:compressed:es5 && npm run --openssl-legacy-provider build:definition-header:es5",
     "build:uncompressed:esm": "cross-env TS_CONFIG=tsconfig-esm.json webpack",
     "build:definition-header:esm": "cross-env TS_CONFIG=tsconfig-esm.json node definition-header.js",
     "build:esm": "npm run build:uncompressed:esm && npm run build:definition-header:esm",
-    "build": "npm run clean && npm run build:es5 && npm run build:esm",
+    "build": "npm run clean && npm run --openssl-legacy-provider build:es5 && npm run build:esm",
     "pack:clean": "cross-env rimraf %npm_package_name%-%npm_package_version%.tgz",
     "pack:uncompress": "cross-env tar xopf %npm_package_name%-%npm_package_version%.tgz",
     "test": "jest --coverage && coveralls < coverage/lcov.info",