diff --git a/tools/showcase/package-lock.json b/tools/showcase/package-lock.json
index f3cf21520a..ec72017d60 100644
--- a/tools/showcase/package-lock.json
+++ b/tools/showcase/package-lock.json
@@ -10,7 +10,7 @@
         "sharp": "^0.35.5"
       },
       "devDependencies": {
-        "@types/node": "^24.19.2",
+        "@types/node": "^26.6.6",
         "typescript": "^7.0.2"
       },
       "engines": {
@@ -588,13 +588,13 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "24.19.2",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.19.2.tgz",
-      "integrity": "sha512-93d49wCWJkCyN87MxLpNN6KXPCwFw7bVUg79mGUV1OS40JGWwVCr8n61DXCSqz7CV6/VfPkb7xec7uP2M+QHWQ==",
+      "version": "26.6.6",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.6.6.tgz",
+      "integrity": "sha512-MzQj+8Kx3XI40OmUAE6Qoh58ZMNstNNMwn2nfd3qWsfe7nDNSqJNzes4njhz6AHwrSHOffSLwXU6yb474Q4aog==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": ">=7.24.0 <7.24.7"
+        "undici-types": "~8.9.0"
       }
     },
     "node_modules/@typescript/typescript-aix-ppc64": {
@@ -1143,9 +1143,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "7.24.6",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.24.6.tgz",
-      "integrity": "sha512-WRNW+sJgj5OBN4/0JpHFqtqzhpbnV0GuB+OozA9gCL7a993SmU+1JBZCzLNxYsbMfIeDL+lTsphD5jN5N+n0zg==",
+      "version": "8.9.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.9.0.tgz",
+      "integrity": "sha512-KTDyRTYX8sWmKXAikPHHSyc63CRPETMctyjKFupcC6OBLXT3xsN0e9aF7m+mIXutFWpUXuedtowG7iLOzp0kQg==",
       "dev": true,
       "license": "MIT"
     },
diff --git a/tools/showcase/package.json b/tools/showcase/package.json
index dcd4d75abf..6b0aa3c9cf 100644
--- a/tools/showcase/package.json
+++ b/tools/showcase/package.json
@@ -17,7 +17,7 @@
     "sharp": "^0.35.5"
   },
   "devDependencies": {
-    "@types/node": "^24.19.2",
+    "@types/node": "^26.6.6",
     "typescript": "^7.0.2"
   }
 }