diff --git a/multichain-testing/package.json b/multichain-testing/package.json
index 41919bf0575e..34dee3d36bdf 100644
--- a/multichain-testing/package.json
+++ b/multichain-testing/package.json
@@ -27,7 +27,7 @@
     "@endo/ses-ava": "^1.2.5",
     "@types/eslint": "^8",
     "@types/fs-extra": "^11",
-    "@types/node": "^20.11.13",
+    "@types/node": "^22.0.0",
     "@typescript-eslint/eslint-plugin": "^6.20.0",
     "@typescript-eslint/parser": "^6.20.0",
     "ava": "^6.1.3",
diff --git a/multichain-testing/yarn.lock b/multichain-testing/yarn.lock
index 81942d3ce7a7..3e5182f417ca 100644
--- a/multichain-testing/yarn.lock
+++ b/multichain-testing/yarn.lock
@@ -897,7 +897,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/node@npm:>=13.7.0, @types/node@npm:^20.11.13":
+"@types/node@npm:>=13.7.0":
   version: 20.14.2
   resolution: "@types/node@npm:20.14.2"
   dependencies:
@@ -906,6 +906,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/node@npm:^22.0.0":
+  version: 22.7.8
+  resolution: "@types/node@npm:22.7.8"
+  dependencies:
+    undici-types: "npm:~6.19.2"
+  checksum: 10c0/3d3b3a2ec5a57ca4fd37b34dce415620993ca5f87cea2c728ffe73aa31446dbfe19c53171c478447bd7d78011ef4845a46ab2f0dc38e699cc75b3d100a60c690
+  languageName: node
+  linkType: hard
+
 "@types/semver@npm:^7.5.0":
   version: 7.5.8
   resolution: "@types/semver@npm:7.5.8"
@@ -3906,7 +3915,7 @@ __metadata:
     "@endo/ses-ava": "npm:^1.2.5"
     "@types/eslint": "npm:^8"
     "@types/fs-extra": "npm:^11"
-    "@types/node": "npm:^20.11.13"
+    "@types/node": "npm:^22.0.0"
     "@typescript-eslint/eslint-plugin": "npm:^6.20.0"
     "@typescript-eslint/parser": "npm:^6.20.0"
     ava: "npm:^6.1.3"
@@ -4423,6 +4432,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"undici-types@npm:~6.19.2":
+  version: 6.19.8
+  resolution: "undici-types@npm:6.19.8"
+  checksum: 10c0/078afa5990fba110f6824823ace86073b4638f1d5112ee26e790155f481f2a868cc3e0615505b6f4282bdf74a3d8caad715fd809e870c2bb0704e3ea6082f344
+  languageName: node
+  linkType: hard
+
 "unicorn-magic@npm:^0.1.0":
   version: 0.1.0
   resolution: "unicorn-magic@npm:0.1.0"