diff --git a/postcard-bindgen/test-bindings-proj/package-lock.json b/postcard-bindgen/test-bindings-proj/package-lock.json
index c423b31..4906e1d 100644
--- a/postcard-bindgen/test-bindings-proj/package-lock.json
+++ b/postcard-bindgen/test-bindings-proj/package-lock.json
@@ -14,7 +14,7 @@
                 "typescript": "^5.0.0"
             },
             "devDependencies": {
-                "@types/node": "^20.0.0"
+                "@types/node": "^24.0.0"
             }
         },
         "../js-test-bindings": {
@@ -58,12 +58,12 @@
             }
         },
         "node_modules/@types/node": {
-            "version": "20.16.5",
-            "resolved": "https://registry.npmjs.org/@types/node/-/node-20.16.5.tgz",
-            "integrity": "sha512-VwYCweNo3ERajwy0IUlqqcyZ8/A7Zwa9ZP3MnENWcB11AejO+tLy3pu850goUW2FC/IJMdZUfKpX/yxL1gymCA==",
+            "version": "24.13.2",
+            "resolved": "https://registry.npmjs.org/@types/node/-/node-24.13.2.tgz",
+            "integrity": "sha512-fRa09kZTgu8o71KFcDjUFuc7F+dEbZYZmkI0mg5YBTRs0yMKjYHsq/c0urDKeDb+D5qVgXOdFcuu+DZPKOITwA==",
             "dev": true,
             "dependencies": {
-                "undici-types": "~6.19.2"
+                "undici-types": "~7.18.0"
             }
         },
         "node_modules/ansi-styles": {
@@ -426,9 +426,9 @@
             }
         },
         "node_modules/undici-types": {
-            "version": "6.19.8",
-            "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.19.8.tgz",
-            "integrity": "sha512-ve2KP6f/JnbPBFyobGHuerC9g1FYGn/F8n1LWTwNxCEzd6IfqTwUQcNXgEtmmQ6DlRrC1hrSrBnCZPokRrDHjw==",
+            "version": "7.18.2",
+            "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
+            "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
             "dev": true
         },
         "node_modules/wrappy": {
@@ -462,12 +462,12 @@
             }
         },
         "@types/node": {
-            "version": "20.16.5",
-            "resolved": "https://registry.npmjs.org/@types/node/-/node-20.16.5.tgz",
-            "integrity": "sha512-VwYCweNo3ERajwy0IUlqqcyZ8/A7Zwa9ZP3MnENWcB11AejO+tLy3pu850goUW2FC/IJMdZUfKpX/yxL1gymCA==",
+            "version": "24.13.2",
+            "resolved": "https://registry.npmjs.org/@types/node/-/node-24.13.2.tgz",
+            "integrity": "sha512-fRa09kZTgu8o71KFcDjUFuc7F+dEbZYZmkI0mg5YBTRs0yMKjYHsq/c0urDKeDb+D5qVgXOdFcuu+DZPKOITwA==",
             "dev": true,
             "requires": {
-                "undici-types": "~6.19.2"
+                "undici-types": "~7.18.0"
             }
         },
         "ansi-styles": {
@@ -739,9 +739,9 @@
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         },
         "undici-types": {
-            "version": "6.19.8",
-            "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.19.8.tgz",
-            "integrity": "sha512-ve2KP6f/JnbPBFyobGHuerC9g1FYGn/F8n1LWTwNxCEzd6IfqTwUQcNXgEtmmQ6DlRrC1hrSrBnCZPokRrDHjw==",
+            "version": "7.18.2",
+            "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
+            "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
             "dev": true
         },
         "wrappy": {
diff --git a/postcard-bindgen/test-bindings-proj/package.json b/postcard-bindgen/test-bindings-proj/package.json
index 947c6fb..718f091 100644
--- a/postcard-bindgen/test-bindings-proj/package.json
+++ b/postcard-bindgen/test-bindings-proj/package.json
@@ -23,6 +23,6 @@
     ],
     "typings": "./lib/index.d.ts",
     "devDependencies": {
-        "@types/node": "^20.0.0"
+        "@types/node": "^24.0.0"
     }
 }