diff --git a/Template-04/package-lock.json b/Template-04/package-lock.json
index 286a902..cef1a66 100644
--- a/Template-04/package-lock.json
+++ b/Template-04/package-lock.json
@@ -21,6 +21,7 @@
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@@ -5981,6 +6049,7 @@
       "version": "0.25.12",
       "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.25.12.tgz",
       "integrity": "sha512-bbPBYYrtZbkt6Os6FiTLCTFxvq4tt3JKall1vRwshA3fdVztsLAatFaZobhkBC8/BrPetoa0oksYoKXoG4ryJg==",
+      "dev": true,
       "hasInstallScript": true,
       "license": "MIT",
       "bin": {
diff --git a/Template-04/package.json b/Template-04/package.json
index 5e3a95e..b90baac 100644
--- a/Template-04/package.json
+++ b/Template-04/package.json
@@ -24,6 +24,7 @@
     "react": "^19.0.1",
     "react-dom": "^19.0.1",
     "react-helmet-async": "^3.0.0",
+    "react-is": "^19.2.6",
     "react-markdown": "^10.1.0",
     "react-router-dom": "^7.14.2",
     "recharts": "^3.8.1",