diff --git a/babelConfig.js b/babelConfig.js
index a88491c0cae..aa4670969ca 100644
--- a/babelConfig.js
+++ b/babelConfig.js
@@ -26,6 +26,7 @@ module.exports = function (options = {}) {
       const plugins = [
         [path.resolve(__dirname, './plugins/pbjsGlobals.js'), options],
         [useLocal('@babel/plugin-transform-runtime')],
+          [useLocal('@babel/plugin-proposal-private-methods')],
       ];
       if (options.codeCoverage) {
         plugins.push([useLocal('babel-plugin-istanbul')])
diff --git a/package-lock.json b/package-lock.json
index 3491a10db60..523b3d3d27b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "prebid.js",
-  "version": "8.27.0",
+  "version": "8.49.5",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "prebid.js",
-      "version": "8.27.0",
+      "version": "8.49.5",
       "license": "Apache-2.0",
       "dependencies": {
         "@babel/core": "^7.16.7",
@@ -27,6 +27,7 @@
       },
       "devDependencies": {
         "@babel/eslint-parser": "^7.16.5",
+        "@babel/plugin-proposal-private-methods": "^7.18.6",
         "@wdio/browserstack-service": "^8.29.0",
         "@wdio/cli": "^8.29.0",
         "@wdio/concise-reporter": "^8.29.0",
@@ -590,6 +591,23 @@
         "@babel/core": "^7.0.0"
       }
     },
+    "node_modules/@babel/plugin-proposal-private-methods": {
+      "version": "7.18.6",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-private-methods/-/plugin-proposal-private-methods-7.18.6.tgz",
+      "integrity": "sha512-nutsvktDItsNn4rpGItSNV2sz1XwS+nfU0Rg8aCx3W3NOKVzdMjJRu0O5OkgDp3ZGICSTbgRpxZoWsxoKRvbeA==",
+      "deprecated": "This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-private-methods instead.",
+      "dev": true,
+      "dependencies": {
+        "@babel/helper-create-class-features-plugin": "^7.18.6",
+        "@babel/helper-plugin-utils": "^7.18.6"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "^7.0.0-0"
+      }
+    },
     "node_modules/@babel/plugin-proposal-private-property-in-object": {
       "version": "7.21.0-placeholder-for-preset-env.2",
       "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-private-property-in-object/-/plugin-proposal-private-property-in-object-7.21.0-placeholder-for-preset-env.2.tgz",
@@ -30449,6 +30467,7 @@
       }
     },
     "plugins/eslint": {
+      "name": "eslint-plugin-prebid",
       "version": "1.0.0",
       "dev": true,
       "license": "Apache-2.0"
@@ -30782,6 +30801,16 @@
         "@babel/helper-plugin-utils": "^7.24.0"
       }
     },
+    "@babel/plugin-proposal-private-methods": {
+      "version": "7.18.6",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-private-methods/-/plugin-proposal-private-methods-7.18.6.tgz",
+      "integrity": "sha512-nutsvktDItsNn4rpGItSNV2sz1XwS+nfU0Rg8aCx3W3NOKVzdMjJRu0O5OkgDp3ZGICSTbgRpxZoWsxoKRvbeA==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-create-class-features-plugin": "^7.18.6",
+        "@babel/helper-plugin-utils": "^7.18.6"
+      }
+    },
     "@babel/plugin-proposal-private-property-in-object": {
       "version": "7.21.0-placeholder-for-preset-env.2",
       "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-private-property-in-object/-/plugin-proposal-private-property-in-object-7.21.0-placeholder-for-preset-env.2.tgz",
diff --git a/package.json b/package.json
index d3666d19f09..f2fc580b643 100644
--- a/package.json
+++ b/package.json
@@ -38,6 +38,7 @@
   },
   "devDependencies": {
     "@babel/eslint-parser": "^7.16.5",
+    "@babel/plugin-proposal-private-methods": "^7.18.6",
     "@wdio/browserstack-service": "^8.29.0",
     "@wdio/cli": "^8.29.0",
     "@wdio/concise-reporter": "^8.29.0",