diff --git a/packages/netlify-cms-widget-datetimezone/package.json b/packages/netlify-cms-widget-datetimezone/package.json
index e30d9daa..61cf5d30 100644
--- a/packages/netlify-cms-widget-datetimezone/package.json
+++ b/packages/netlify-cms-widget-datetimezone/package.json
@@ -41,7 +41,7 @@
     "cross-env": "^7.0.3",
     "html-webpack-plugin": "^5.3.2",
     "react": "^17.0.2",
-    "source-map-loader": "^3.0.0",
+    "source-map-loader": "^4.0.1",
     "webpack": "^5.44.0",
     "webpack-cli": "^4.7.2",
     "webpack-dev-server": "^4.3.1",
diff --git a/yarn.lock b/yarn.lock
index f171ff5f..78a6882d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4653,10 +4653,10 @@ JSONStream@^1.0.4:
     jsonparse "^1.2.0"
     through ">=2.2.7 <3"
 
-abab@^2.0.5:
-  version "2.0.5"
-  resolved "https://registry.yarnpkg.com/abab/-/abab-2.0.5.tgz#c0b678fb32d60fc1219c784d6a826fe385aeb79a"
-  integrity sha512-9IK9EadsbHo6jLWIpxpR6pL0sazTXV6+SQv25ZB+F7Bj9mJNaOc4nCRabwd5M/JwmUa8idz6Eci6eKfJryPs6Q==
+abab@^2.0.6:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/abab/-/abab-2.0.6.tgz#41b80f2c871d19686216b82309231cfd3cb3d291"
+  integrity sha512-j2afSsaIENvHZN2B8GOpF566vZ5WVk5opAiMTvWgaQT8DkbOqsTfvNAvHoRGU2zzP8cPoqys+xHTRDWW8L+/BA==
 
 abbrev@1:
   version "1.1.1"
@@ -11388,7 +11388,7 @@ iconv-lite@0.4.24, iconv-lite@^0.4.24, iconv-lite@^0.4.4:
   dependencies:
     safer-buffer ">= 2.1.2 < 3"
 
-iconv-lite@^0.6.2:
+iconv-lite@^0.6.2, iconv-lite@^0.6.3:
   version "0.6.3"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.6.3.tgz#a52f80bf38da1952eb5c681790719871a1a72501"
   integrity sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==
@@ -19100,14 +19100,19 @@ source-map-js@^0.6.2:
   resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-0.6.2.tgz#0bb5de631b41cfbda6cfba8bd05a80efdfd2385e"
   integrity sha512-/3GptzWzu0+0MBQFrDKzw/DvvMTUORvgY6k6jd/VS6iCR4RDTKWH6v6WPwQoUO8667uQEf9Oe38DxAYWY5F/Ug==
 
-source-map-loader@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/source-map-loader/-/source-map-loader-3.0.0.tgz#f2a04ee2808ad01c774dea6b7d2639839f3b3049"
-  integrity sha512-GKGWqWvYr04M7tn8dryIWvb0s8YM41z82iQv01yBtIylgxax0CwvSy6gc2Y02iuXwEfGWRlMicH0nvms9UZphw==
+source-map-js@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.0.2.tgz#adbc361d9c62df380125e7f161f71c826f1e490c"
+  integrity sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw==
+
+source-map-loader@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/source-map-loader/-/source-map-loader-4.0.1.tgz#72f00d05f5d1f90f80974eda781cbd7107c125f2"
+  integrity sha512-oqXpzDIByKONVY8g1NUPOTQhe0UTU5bWUl32GSkqK2LjJj0HmwTMVKxcUip0RgAYhY1mqgOxjbQM48a0mmeNfA==
   dependencies:
-    abab "^2.0.5"
-    iconv-lite "^0.6.2"
-    source-map-js "^0.6.2"
+    abab "^2.0.6"
+    iconv-lite "^0.6.3"
+    source-map-js "^1.0.2"
 
 source-map-resolve@^0.5.0, source-map-resolve@^0.5.2:
   version "0.5.3"