diff --git a/apps/realtime/package.json b/apps/realtime/package.json
index a7ec69192bd..a4307a4d69a 100644
--- a/apps/realtime/package.json
+++ b/apps/realtime/package.json
@@ -43,6 +43,6 @@
     "@types/node": "24.2.1",
     "socket.io-client": "4.8.1",
     "typescript": "^5.7.3",
-    "vitest": "^3.0.8"
+    "vitest": "^4.1.8"
   }
 }
diff --git a/apps/sim/package.json b/apps/sim/package.json
index 3cd37a986b6..b0d2ff9afb4 100644
--- a/apps/sim/package.json
+++ b/apps/sim/package.json
@@ -235,7 +235,7 @@
     "tailwindcss": "^3.4.1",
     "typescript": "^5.7.3",
     "vite-tsconfig-paths": "^5.1.4",
-    "vitest": "^3.0.8"
+    "vitest": "^4.1.8"
   },
   "trustedDependencies": [
     "canvas",
diff --git a/packages/audit/package.json b/packages/audit/package.json
index bad5fe28b39..99351618fb9 100644
--- a/packages/audit/package.json
+++ b/packages/audit/package.json
@@ -34,6 +34,6 @@
     "@sim/testing": "workspace:*",
     "@sim/tsconfig": "workspace:*",
     "typescript": "^5.7.3",
-    "vitest": "^3.0.8"
+    "vitest": "^4.1.8"
   }
 }
diff --git a/packages/logger/package.json b/packages/logger/package.json
index 4f06d695658..6cd0026f399 100644
--- a/packages/logger/package.json
+++ b/packages/logger/package.json
@@ -30,6 +30,6 @@
   "devDependencies": {
     "@sim/tsconfig": "workspace:*",
     "typescript": "^5.7.3",
-    "vitest": "^3.0.8"
+    "vitest": "^4.1.8"
   }
 }
diff --git a/packages/security/package.json b/packages/security/package.json
index dc823111799..e4c21ebe8d9 100644
--- a/packages/security/package.json
+++ b/packages/security/package.json
@@ -45,6 +45,6 @@
     "@sim/tsconfig": "workspace:*",
     "@types/node": "24.2.1",
     "typescript": "^5.7.3",
-    "vitest": "^3.0.8"
+    "vitest": "^4.1.8"
   }
 }
diff --git a/packages/testing/package.json b/packages/testing/package.json
index 74227adb0c8..1969c9e0007 100644
--- a/packages/testing/package.json
+++ b/packages/testing/package.json
@@ -54,7 +54,7 @@
   "devDependencies": {
     "@sim/tsconfig": "workspace:*",
     "typescript": "^5.7.3",
-    "vitest": "^3.0.8"
+    "vitest": "^4.1.8"
   },
   "dependencies": {
     "@sim/utils": "workspace:*"
diff --git a/packages/ts-sdk/package.json b/packages/ts-sdk/package.json
index ef7b0eef1a3..a2a87413d87 100644
--- a/packages/ts-sdk/package.json
+++ b/packages/ts-sdk/package.json
@@ -43,7 +43,7 @@
     "@types/node": "^20.5.1",
     "@vitest/coverage-v8": "^3.0.8",
     "typescript": "^5.7.3",
-    "vitest": "^3.0.8"
+    "vitest": "^4.1.8"
   },
   "engines": {
     "node": ">=16"
diff --git a/packages/utils/package.json b/packages/utils/package.json
index d02e9bd46a8..a7371568ba5 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -56,6 +56,6 @@
   "devDependencies": {
     "@sim/tsconfig": "workspace:*",
     "typescript": "^5.7.3",
-    "vitest": "^3.0.8"
+    "vitest": "^4.1.8"
   }
 }