diff --git a/reference-apps/typescript-api-first/package-lock.json b/reference-apps/typescript-api-first/package-lock.json
index 794eb38..2419b61 100644
--- a/reference-apps/typescript-api-first/package-lock.json
+++ b/reference-apps/typescript-api-first/package-lock.json
@@ -28,7 +28,7 @@
         "@types/cors": "^2.8.17",
         "@types/express": "^5.0.6",
         "@types/jest": "^30.0.0",
-        "@types/node": "^25.5.0",
+        "@types/node": "^26.4.0",
         "@types/pg": "^8.23.1",
         "@types/supertest": "^7.2.1",
         "jest": "^30.5.0",
@@ -2153,12 +2153,12 @@
       }
     },
     "node_modules/@types/node": {
-      "version": "25.5.0",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.5.0.tgz",
-      "integrity": "sha512-jp2P3tQMSxWugkCUKLRPVUpGaL5MVFwF8RDuSRztfwgN1wmqJeMSbKlnEtQqU8UrhTmzEmZdu2I6v2dpp7XIxw==",
+      "version": "26.4.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.4.0.tgz",
+      "integrity": "sha512-faiGnoIrLH/V8cibOMEAZ8pMw6oXqSukl29ra4mN8GdaB2ZewzeaLj+INpV5N+Z1eKWzY+IzaIZH2EIR6YZRNQ==",
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.18.0"
+        "undici-types": "~8.3.0"
       }
     },
     "node_modules/@types/pg": {
@@ -7974,9 +7974,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "7.18.2",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
-      "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.3.0.tgz",
+      "integrity": "sha512-j375ScV60dom+YkPFIfTLcOiPxkN/buHz5GobjLhixFuANaNs3C9l4GmrWqejgXWJ7BbJcFYpTEUkS1Ge8bpZQ==",
       "license": "MIT"
     },
     "node_modules/universalify": {
diff --git a/reference-apps/typescript-api-first/package.json b/reference-apps/typescript-api-first/package.json
index 98ec45e..45fff20 100644
--- a/reference-apps/typescript-api-first/package.json
+++ b/reference-apps/typescript-api-first/package.json
@@ -39,7 +39,7 @@
     "@types/cors": "^2.8.17",
     "@types/express": "^5.0.6",
     "@types/jest": "^30.0.0",
-    "@types/node": "^25.5.0",
+    "@types/node": "^26.4.0",
     "@types/pg": "^8.23.1",
     "@types/supertest": "^7.2.1",
     "jest": "^30.5.0",