diff --git a/samples/datatrue-solution-design/package-lock.json b/samples/datatrue-solution-design/package-lock.json
index 621f4cace..0041cf655 100644
--- a/samples/datatrue-solution-design/package-lock.json
+++ b/samples/datatrue-solution-design/package-lock.json
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@@ -6968,12 +6968,12 @@
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@@ -10543,9 +10543,9 @@
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+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.3.0.tgz",
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diff --git a/samples/datatrue-solution-design/package.json b/samples/datatrue-solution-design/package.json
index 0b9a04c75..7ff24c7e0 100644
--- a/samples/datatrue-solution-design/package.json
+++ b/samples/datatrue-solution-design/package.json
@@ -11,7 +11,7 @@
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     "@google/clasp": "^2.5.0",
     "@types/google-apps-script": "^2.0.11",
-    "@types/node": "^24.13.2",
+    "@types/node": "^26.1.0",
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