diff --git a/examples/google-secure-signals-integration/react_client_side/package-lock.json b/examples/google-secure-signals-integration/react_client_side/package-lock.json
index 923dd8e..f316aa9 100644
--- a/examples/google-secure-signals-integration/react_client_side/package-lock.json
+++ b/examples/google-secure-signals-integration/react_client_side/package-lock.json
@@ -17,6 +17,9 @@
         "react-dom": "^19.0.0",
         "react-scripts": "^5.0.1",
         "svgo": "^3.3.2"
+      },
+      "devDependencies": {
+        "@babel/plugin-proposal-private-property-in-object": "^7.21.0"
       }
     },
     "node_modules/@alloc/quick-lru": {
@@ -587,9 +590,17 @@
       }
     },
     "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",
-      "integrity": "sha512-SOSkfJDddaM7mak6cPEpswyTRnuRltl429hMraQEglW+OkovnCzsiszTmsrlY//qLFjCpQDFRvjdm2wA5pPm9w==",
+      "version": "7.21.11",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-private-property-in-object/-/plugin-proposal-private-property-in-object-7.21.11.tgz",
+      "integrity": "sha512-0QZ8qP/3RLDVBwBFoWAwCtgcDZJVwA5LUJRZU8x2YFfKNuFq161wK3cuGrALu5yiPu+vzwTAg/sMWVNeWeNyaw==",
+      "deprecated": "This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-private-property-in-object instead.",
+      "dev": true,
+      "dependencies": {
+        "@babel/helper-annotate-as-pure": "^7.18.6",
+        "@babel/helper-create-class-features-plugin": "^7.21.0",
+        "@babel/helper-plugin-utils": "^7.20.2",
+        "@babel/plugin-syntax-private-property-in-object": "^7.14.5"
+      },
       "engines": {
         "node": ">=6.9.0"
       },
@@ -1813,6 +1824,17 @@
         "@babel/core": "^7.0.0-0"
       }
     },
+    "node_modules/@babel/preset-env/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",
+      "integrity": "sha512-SOSkfJDddaM7mak6cPEpswyTRnuRltl429hMraQEglW+OkovnCzsiszTmsrlY//qLFjCpQDFRvjdm2wA5pPm9w==",
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "^7.0.0-0"
+      }
+    },
     "node_modules/@babel/preset-env/node_modules/semver": {
       "version": "6.3.1",
       "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.1.tgz",
diff --git a/examples/google-secure-signals-integration/react_client_side/package.json b/examples/google-secure-signals-integration/react_client_side/package.json
index 91b7ada..a98f745 100644
--- a/examples/google-secure-signals-integration/react_client_side/package.json
+++ b/examples/google-secure-signals-integration/react_client_side/package.json
@@ -13,6 +13,9 @@
     "react-scripts": "^5.0.1",
     "svgo": "^3.3.2"
   },
+  "devDependencies": {
+    "@babel/plugin-proposal-private-property-in-object": "^7.21.0"
+  },
   "overrides": {
     "nth-check": "^2.0.1"
   },