diff --git a/clients/javascript/package-lock.json b/clients/javascript/package-lock.json
index 35daa09..3a9bd97 100644
--- a/clients/javascript/package-lock.json
+++ b/clients/javascript/package-lock.json
@@ -9,7 +9,7 @@
       "version": "1.0.0",
       "license": "MIT",
       "devDependencies": {
-        "@types/node": "^25.2.0",
+        "@types/node": "^26.6.4",
         "@typescript-eslint/eslint-plugin": "^8.54.0",
         "@typescript-eslint/parser": "^8.54.0",
         "eslint": "^9.39.2",
@@ -1123,13 +1123,13 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "25.2.0",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.2.0.tgz",
-      "integrity": "sha512-DZ8VwRFUNzuqJ5khrvwMXHmvPe+zGayJhr2CDNiKB1WBE1ST8Djl00D0IC4vvNmHMdj6DlbYRIaFE7WHjlDl5w==",
+      "version": "26.6.4",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.6.4.tgz",
+      "integrity": "sha512-ldVPDCzj7fsaGZrLB0NuHuTvJcsNasysBAqMolr/cgxrLd1xbqxIr3XJiPnHHJUCxj5sNF1vnRj9aWnrVh5Jcg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.16.0"
+        "undici-types": "~8.9.0"
       }
     },
     "node_modules/@typescript-eslint/eslint-plugin": {
@@ -3099,9 +3099,9 @@
       "license": "MIT"
     },
     "node_modules/undici-types": {
-      "version": "7.16.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.16.0.tgz",
-      "integrity": "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw==",
+      "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/clients/javascript/package.json b/clients/javascript/package.json
index ed57a2d..4900b8e 100644
--- a/clients/javascript/package.json
+++ b/clients/javascript/package.json
@@ -52,7 +52,7 @@
     "node": ">=18.0.0"
   },
   "devDependencies": {
-    "@types/node": "^25.2.0",
+    "@types/node": "^26.6.4",
     "tsup": "^8.0.0",
     "typescript": "^5.3.0",
     "vitest": "^4.0.18",