diff --git a/config/webpack/configuration.js b/config/webpack/configuration.js
index e4f88a9c4..25b6b7abd 100644
--- a/config/webpack/configuration.js
+++ b/config/webpack/configuration.js
@@ -2,14 +2,14 @@
 
 const { resolve } = require('path');
 const { env } = require('process');
-const { safeLoad } = require('js-yaml');
+const { load } = require('js-yaml');
 const { readFileSync } = require('fs');
 
 const configPath = resolve('config', 'webpacker.yml');
-const settings = safeLoad(readFileSync(configPath), 'utf8')[env.RAILS_ENV || env.NODE_ENV];
+const settings = load(readFileSync(configPath), 'utf8')[env.RAILS_ENV || env.NODE_ENV];
 
 const themePath = resolve('config', 'themes.yml');
-const themes = safeLoad(readFileSync(themePath), 'utf8');
+const themes = load(readFileSync(themePath), 'utf8');
 
 const output = {
   path: resolve('public', settings.public_output_path),
diff --git a/package.json b/package.json
index 357777815..30926b651 100644
--- a/package.json
+++ b/package.json
@@ -107,7 +107,7 @@
     "intl-messageformat": "^2.2.0",
     "intl-relativeformat": "^6.4.3",
     "is-nan": "^1.3.2",
-    "js-yaml": "^3.14.1",
+    "js-yaml": "^4.0.0",
     "lodash": "^4.17.19",
     "mark-loader": "^0.1.6",
     "marky": "^1.2.1",
diff --git a/yarn.lock b/yarn.lock
index 431ee25ff..450363e30 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1954,6 +1954,11 @@ argparse@^1.0.7:
   dependencies:
     sprintf-js "~1.0.2"
 
+argparse@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-2.0.1.tgz#246f50f3ca78a3240f6c997e8a9bd1eac49e4b38"
+  integrity sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==
+
 aria-query@^4.2.2:
   version "4.2.2"
   resolved "https://registry.yarnpkg.com/aria-query/-/aria-query-4.2.2.tgz#0d2ca6c9aceb56b8977e9fed6aed7e15bbd2f83b"
@@ -6509,7 +6514,7 @@ js-string-escape@1.0.1:
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
   integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
 
-js-yaml@^3.13.1, js-yaml@^3.14.1, js-yaml@^3.4.6, js-yaml@^3.5.1, js-yaml@^3.5.4:
+js-yaml@^3.13.1, js-yaml@^3.4.6, js-yaml@^3.5.1, js-yaml@^3.5.4:
   version "3.14.1"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.14.1.tgz#dae812fdb3825fa306609a8717383c50c36a0537"
   integrity sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==
@@ -6517,6 +6522,13 @@ js-yaml@^3.13.1, js-yaml@^3.14.1, js-yaml@^3.4.6, js-yaml@^3.5.1, js-yaml@^3.5.4
     argparse "^1.0.7"
     esprima "^4.0.0"
 
+js-yaml@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-4.0.0.tgz#f426bc0ff4b4051926cd588c71113183409a121f"
+  integrity sha512-pqon0s+4ScYUvX30wxQi3PogGFAlUyH0awepWvwkj4jD4v+ova3RiYw8bmA6x2rDrEaj8i/oWKoRxpVNW+Re8Q==
+  dependencies:
+    argparse "^2.0.1"
+
 jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"