diff --git a/examples/codesandbox/package.json b/examples/codesandbox/package.json
index 5a3b70f338e..d9293082903 100644
--- a/examples/codesandbox/package.json
+++ b/examples/codesandbox/package.json
@@ -10,14 +10,14 @@
     "type-check": "tsc --noEmit"
   },
   "dependencies": {
-    "react": "^18.3.1",
-    "react-dom": "^18.3.1"
+    "react": "^19.2.8",
+    "react-dom": "^19.2.8"
   },
   "devDependencies": {
     "@primer/react": "38.38.0",
     "@primer/styled-react": "1.1.1",
-    "@types/react": "^18.3.11",
-    "@types/react-dom": "^18.3.0",
+    "@types/react": "^19.2.18",
+    "@types/react-dom": "^19.2.5",
     "@vitejs/plugin-react": "^6.0.2",
     "styled-components": "5.x",
     "typescript": "^6.0.3",
diff --git a/package-lock.json b/package-lock.json
index 292f073d539..ae9d9e44ee4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -80,20 +80,67 @@
     "examples/codesandbox": {
       "version": "0.0.0",
       "dependencies": {
-        "react": "^18.3.1",
-        "react-dom": "^18.3.1"
+        "react": "^19.2.8",
+        "react-dom": "^19.2.8"
       },
       "devDependencies": {
         "@primer/react": "38.38.0",
         "@primer/styled-react": "1.1.1",
-        "@types/react": "^18.3.11",
-        "@types/react-dom": "^18.3.0",
+        "@types/react": "^19.2.18",
+        "@types/react-dom": "^19.2.5",
         "@vitejs/plugin-react": "^6.0.2",
         "styled-components": "5.x",
         "typescript": "^6.0.3",
         "vite": "^8.0.16"
       }
     },
+    "examples/codesandbox/node_modules/@types/react": {
+      "version": "19.2.18",
+      "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.18.tgz",
+      "integrity": "sha512-AnzbBERsrLKtk2XSfTbYRLjQPdy116Sty4q+T+Bp3IC4l6jNBvreVPAHmpq9qhXQM7CXZPjLVmGMw9sy+hxQ3w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "csstype": "^3.2.2"
+      }
+    },
+    "examples/codesandbox/node_modules/@types/react-dom": {
+      "version": "19.2.5",
+      "resolved": "https://registry.npmjs.org/@types/react-dom/-/react-dom-19.2.5.tgz",
+      "integrity": "sha512-fMPwH9v7r/pp43yUd2/Mbiex5KouJwwR3dzHkhLREUC6764VyDsqxhAxv6OFEYR1RhjOyD1naqba8ECDBe7ZQg==",
+      "dev": true,
+      "license": "MIT",
+      "peerDependencies": {
+        "@types/react": "^19.2.0"
+      }
+    },
+    "examples/codesandbox/node_modules/react": {
+      "version": "19.2.8",
+      "resolved": "https://registry.npmjs.org/react/-/react-19.2.8.tgz",
+      "integrity": "sha512-PWaYA1L/q9u2u7xYQi+Y3L3Yfnie7XyLeaJICV1MGD6LprsBxcAqGjYyr0eY3p+QdsA+x/Irkt4Qif8D63+Sbw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "examples/codesandbox/node_modules/react-dom": {
+      "version": "19.2.8",
+      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-19.2.8.tgz",
+      "integrity": "sha512-rVprimfGBG3DR+Tq0IQG2DT5PxKth1WIGDmj5yPmlzr4YBe7uyE+Du4oVqTDXZSHGGGXRtTJEGSSePyQCMBglQ==",
+      "license": "MIT",
+      "dependencies": {
+        "scheduler": "^0.27.0"
+      },
+      "peerDependencies": {
+        "react": "^19.2.8"
+      }
+    },
+    "examples/codesandbox/node_modules/scheduler": {
+      "version": "0.27.0",
+      "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.27.0.tgz",
+      "integrity": "sha512-eNv+WrVbKu1f3vbYJT/xtiF5syA5HPIMtf9IgY/nKg0sWqzAUEvqY/xm7OcZc/qafLx/iO9FgOmeSAp4v5ti/Q==",
+      "license": "MIT"
+    },
     "examples/nextjs": {
       "name": "example-nextjs",
       "version": "0.0.0",
@@ -13085,7 +13132,9 @@
       "license": "CC0-1.0"
     },
     "node_modules/csstype": {
-      "version": "3.1.3",
+      "version": "3.2.3",
+      "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.2.3.tgz",
+      "integrity": "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==",
       "license": "MIT"
     },
     "node_modules/damerau-levenshtein": {
@@ -18720,6 +18769,7 @@
     },
     "node_modules/loose-envify": {
       "version": "1.4.0",
+      "dev": true,
       "license": "MIT",
       "dependencies": {
         "js-tokens": "^3.0.0 || ^4.0.0"
@@ -24682,6 +24732,7 @@
     },
     "node_modules/react": {
       "version": "18.3.1",
+      "dev": true,
       "license": "MIT",
       "dependencies": {
         "loose-envify": "^1.1.0"
@@ -24747,6 +24798,7 @@
     },
     "node_modules/react-dom": {
       "version": "18.3.1",
+      "dev": true,
       "license": "MIT",
       "dependencies": {
         "loose-envify": "^1.1.0",
@@ -25692,6 +25744,7 @@
     },
     "node_modules/scheduler": {
       "version": "0.23.2",
+      "dev": true,
       "license": "MIT",
       "dependencies": {
         "loose-envify": "^1.1.0"