diff --git a/package.json b/package.json
index 636771d..89041ee 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
     "typedoc": "^0.26.11",
     "typescript": "^5.6.2",
     "vite-tsconfig-paths": "^5.0.1",
-    "vitest": "^2.1.9",
+    "vitest": "^4.0.17",
     "tsup": "^8.3.0"
   },
   "packageManager": "pnpm@9.9.0+sha512.60c18acd138bff695d339be6ad13f7e936eea6745660d4cc4a776d5247c540d0edee1a563695c183a66eb917ef88f2b4feb1fc25f32a7adcadc7aaf3438e99c1",
diff --git a/packages/connect-discovery/package.json b/packages/connect-discovery/package.json
index 7b5df4c..3950400 100644
--- a/packages/connect-discovery/package.json
+++ b/packages/connect-discovery/package.json
@@ -56,6 +56,6 @@
   },
   "devDependencies": {
     "typescript": "5.6.2",
-    "vitest": "^2.1.9"
+    "vitest": "^4.0.17"
   }
 }
diff --git a/packages/connect-extension-protocol/package.json b/packages/connect-extension-protocol/package.json
index e9f67d9..6cc3abd 100644
--- a/packages/connect-extension-protocol/package.json
+++ b/packages/connect-extension-protocol/package.json
@@ -44,6 +44,6 @@
     "lint": "eslint . --ext .js,.ts"
   },
   "devDependencies": {
-    "vitest": "^2.1.9"
+    "vitest": "^4.0.17"
   }
 }
diff --git a/packages/connect-known-chains/package.json b/packages/connect-known-chains/package.json
index 5b479a9..bdcb849 100644
--- a/packages/connect-known-chains/package.json
+++ b/packages/connect-known-chains/package.json
@@ -269,6 +269,6 @@
   },
   "devDependencies": {
     "typescript": "5.6.2",
-    "vitest": "^2.1.9"
+    "vitest": "^4.0.17"
   }
 }
diff --git a/packages/connect/package.json b/packages/connect/package.json
index f1bc4d8..4d76b88 100644
--- a/packages/connect/package.json
+++ b/packages/connect/package.json
@@ -88,6 +88,6 @@
   },
   "devDependencies": {
     "typescript": "5.6.2",
-    "vitest": "^2.1.9"
+    "vitest": "^4.0.17"
   }
 }
diff --git a/packages/discovery/package.json b/packages/discovery/package.json
index 409e731..b24ea73 100644
--- a/packages/discovery/package.json
+++ b/packages/discovery/package.json
@@ -53,6 +53,6 @@
   },
   "devDependencies": {
     "typescript": "5.6.2",
-    "vitest": "^2.1.9"
+    "vitest": "^4.0.17"
   }
 }
diff --git a/packages/smoldot-discovery/package.json b/packages/smoldot-discovery/package.json
index 20baebd..85a6cf3 100644
--- a/packages/smoldot-discovery/package.json
+++ b/packages/smoldot-discovery/package.json
@@ -68,6 +68,6 @@
   },
   "devDependencies": {
     "typescript": "5.6.2",
-    "vitest": "^2.1.9"
+    "vitest": "^4.0.17"
   }
 }