diff --git a/package-lock.json b/package-lock.json
index 4ab7f94..7ee9c7e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
       "devDependencies": {
         "@microsoft/microsoft-graph-client": "^3.0.5",
         "@types/chai": "^5.0.0",
-        "@types/node": "^24.10.2",
+        "@types/node": "^26.6.5",
         "chai": "^6.2.2",
         "mocha": "^11.0.1",
         "typescript": "^5.0.3"
@@ -179,12 +179,13 @@
       "dev": true
     },
     "node_modules/@types/node": {
-      "version": "24.10.2",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.10.2.tgz",
-      "integrity": "sha512-WOhQTZ4G8xZ1tjJTvKOpyEVSGgOTvJAfDK3FNFgELyaTpzhdgHVHeqW8V+UJvzF5BT+/B54T/1S2K6gd9c7bbA==",
+      "version": "26.6.5",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.6.5.tgz",
+      "integrity": "sha512-uMzsv9stDdofIZBx4UGh4Z9ZgXnGC9seRDscilBcTHAeOFk67MZg/k9bWVfO+bk4qZmG+l52hRnLwUiH2LnJTg==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.16.0"
+        "undici-types": "~8.9.0"
       }
     },
     "node_modules/ansi-regex": {
@@ -971,10 +972,11 @@
       }
     },
     "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==",
-      "dev": true
+      "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"
     },
     "node_modules/which": {
       "version": "2.0.2",
@@ -1208,12 +1210,12 @@
       "dev": true
     },
     "@types/node": {
-      "version": "24.10.2",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.10.2.tgz",
-      "integrity": "sha512-WOhQTZ4G8xZ1tjJTvKOpyEVSGgOTvJAfDK3FNFgELyaTpzhdgHVHeqW8V+UJvzF5BT+/B54T/1S2K6gd9c7bbA==",
+      "version": "26.6.5",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.6.5.tgz",
+      "integrity": "sha512-uMzsv9stDdofIZBx4UGh4Z9ZgXnGC9seRDscilBcTHAeOFk67MZg/k9bWVfO+bk4qZmG+l52hRnLwUiH2LnJTg==",
       "dev": true,
       "requires": {
-        "undici-types": "~7.16.0"
+        "undici-types": "~8.9.0"
       }
     },
     "ansi-regex": {
@@ -1755,9 +1757,9 @@
       "dev": true
     },
     "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
     },
     "which": {
diff --git a/package.json b/package.json
index 38ebccb..0cc1b7f 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
   "devDependencies": {
     "@microsoft/microsoft-graph-client": "^3.0.5",
     "@types/chai": "^5.0.0",
-    "@types/node": "^24.10.2",
+    "@types/node": "^26.6.5",
     "chai": "^6.2.2",
     "mocha": "^11.0.1",
     "typescript": "^5.0.3"