diff --git a/package.json b/package.json
index e34edf64..bd3e24a5 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   },
   "devDependencies": {
     "@biomejs/biome": "^2.5.14",
-    "@types/node": "^25.6.2",
+    "@types/node": "^26.6.4",
     "esbuild": "^0.28.0",
     "tsdown": "0.23.0",
     "tsx": "^4.23.15",
diff --git a/yarn.lock b/yarn.lock
index 6effe4cb..913fa715 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1184,12 +1184,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/node@npm:^25.6.2":
-  version: 25.6.2
-  resolution: "@types/node@npm:25.6.2"
+"@types/node@npm:^26.6.4":
+  version: 26.6.4
+  resolution: "@types/node@npm:26.6.4"
   dependencies:
-    undici-types: "npm:~7.19.0"
-  checksum: 10c0/7f540331aa3ab88c285aeaf2eb43e3992f54f0cdb7f3593d156af67b199d4eaf56590fa1c310a00aa58ff69dba668cb3915a157fe83cd6b40a73bb338a12f09a
+    undici-types: "npm:~8.9.0"
+  checksum: 10c0/094e7362df9200ba4c2da09131ca3b5d1aa51535a268a24e4ee2546d9c5a323d1d30cbdaaaa3db7ef8b2387572d1f9edabb11538ab7a09d3bca33ae5cddc2b1b
   languageName: node
   linkType: hard
 
@@ -4327,7 +4327,7 @@ __metadata:
   resolution: "purestack-repo@workspace:."
   dependencies:
     "@biomejs/biome": "npm:^2.5.14"
-    "@types/node": "npm:^25.6.2"
+    "@types/node": "npm:^26.6.4"
     esbuild: "npm:^0.28.0"
     tsdown: "npm:0.23.0"
     tsx: "npm:^4.23.15"
@@ -5268,10 +5268,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"undici-types@npm:~7.19.0":
-  version: 7.19.2
-  resolution: "undici-types@npm:7.19.2"
-  checksum: 10c0/7159f10546f9f6c47d36776bb1bbf8671e87c1e587a6fee84ae1f111ae8de4f914efa8ca0dfcd224f4f4a9dfc3f6028f627ccb5ddaccf82d7fd54671b89fac3e
+"undici-types@npm:~8.9.0":
+  version: 8.9.0
+  resolution: "undici-types@npm:8.9.0"
+  checksum: 10c0/51c712c20c087368f62c6fc0f2bc49fa76bfe5dec28ff01584bb677ff29b0622569783c02d43e151143808c48c0503f804093bd2c491b10f2a830138034cb451
   languageName: node
   linkType: hard