diff --git a/packages/base/package.json b/packages/base/package.json
index 60324e8..04966f4 100644
--- a/packages/base/package.json
+++ b/packages/base/package.json
@@ -46,7 +46,7 @@
     "eslint-plugin-prettier": "^5.2.1",
     "eslint-plugin-promise": "^7.1.0",
     "prettier": "^3.3.3",
-    "vitest": "^2.1.9"
+    "vitest": "^4.1.9"
   },
   "peerDependencies": {
     "eslint": "^9.11.0",
diff --git a/packages/browser/package.json b/packages/browser/package.json
index 5d60bad..330fcd7 100644
--- a/packages/browser/package.json
+++ b/packages/browser/package.json
@@ -45,7 +45,7 @@
     "eslint-plugin-jsdoc": "^50.2.4",
     "eslint-plugin-prettier": "^5.2.1",
     "prettier": "^3.3.3",
-    "vitest": "^2.1.9"
+    "vitest": "^4.1.9"
   },
   "peerDependencies": {
     "@metamask/eslint-config": "workspace:^",
diff --git a/packages/commonjs/package.json b/packages/commonjs/package.json
index 1e218d0..172f144 100644
--- a/packages/commonjs/package.json
+++ b/packages/commonjs/package.json
@@ -45,7 +45,7 @@
     "eslint-plugin-jsdoc": "^50.2.4",
     "eslint-plugin-prettier": "^5.2.1",
     "prettier": "^3.3.3",
-    "vitest": "^2.1.9"
+    "vitest": "^4.1.9"
   },
   "peerDependencies": {
     "@metamask/eslint-config": "workspace:^",
diff --git a/packages/jest/package.json b/packages/jest/package.json
index aa724df..e3cf211 100644
--- a/packages/jest/package.json
+++ b/packages/jest/package.json
@@ -50,7 +50,7 @@
     "eslint-plugin-prettier": "^5.2.1",
     "jest": "^29.7.0",
     "prettier": "^3.3.3",
-    "vitest": "^2.1.9"
+    "vitest": "^4.1.9"
   },
   "peerDependencies": {
     "@metamask/eslint-config": "workspace:^",
diff --git a/packages/mocha/package.json b/packages/mocha/package.json
index 89809bd..23eca89 100644
--- a/packages/mocha/package.json
+++ b/packages/mocha/package.json
@@ -47,7 +47,7 @@
     "eslint-plugin-prettier": "^5.2.1",
     "globals": "^15.9.0",
     "prettier": "^3.3.3",
-    "vitest": "^2.1.9"
+    "vitest": "^4.1.9"
   },
   "peerDependencies": {
     "@metamask/eslint-config": "workspace:^",
diff --git a/packages/nodejs/package.json b/packages/nodejs/package.json
index fe784f9..48fb7e1 100644
--- a/packages/nodejs/package.json
+++ b/packages/nodejs/package.json
@@ -47,7 +47,7 @@
     "eslint-plugin-n": "^17.10.3",
     "eslint-plugin-prettier": "^5.2.1",
     "prettier": "^3.3.3",
-    "vitest": "^2.1.9"
+    "vitest": "^4.1.9"
   },
   "peerDependencies": {
     "@metamask/eslint-config": "workspace:^",
diff --git a/packages/typescript/package.json b/packages/typescript/package.json
index 13b17e2..dfef0bb 100644
--- a/packages/typescript/package.json
+++ b/packages/typescript/package.json
@@ -50,7 +50,7 @@
     "prettier": "^3.3.3",
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.47.0",
-    "vitest": "^2.1.9"
+    "vitest": "^4.1.9"
   },
   "peerDependencies": {
     "@metamask/eslint-config": "workspace:^",
diff --git a/packages/vitest/package.json b/packages/vitest/package.json
index 77fb8e6..a208517 100644
--- a/packages/vitest/package.json
+++ b/packages/vitest/package.json
@@ -48,7 +48,7 @@
     "eslint-plugin-prettier": "^5.2.1",
     "jest": "^29.7.0",
     "prettier": "^3.3.3",
-    "vitest": "^2.1.9"
+    "vitest": "^4.1.9"
   },
   "peerDependencies": {
     "@metamask/eslint-config": "workspace:^",