diff --git a/packages/atxp-client/package.json b/packages/atxp-client/package.json
index 0f80553..e848675 100644
--- a/packages/atxp-client/package.json
+++ b/packages/atxp-client/package.json
@@ -28,7 +28,7 @@
     "typecheck": "tsc --noEmit",
     "lint": "eslint . --ext .ts",
     "lint:fix": "eslint . --ext .ts --fix",
-    "test": "vitest run",
+    "test": "vitest run --fileParallelism=false",
     "prepack": "npm run build && npm run typecheck",
     "pack:dry": "npm pack --dry-run"
   },
diff --git a/packages/atxp-express/package.json b/packages/atxp-express/package.json
index ff9d29b..b29e08d 100644
--- a/packages/atxp-express/package.json
+++ b/packages/atxp-express/package.json
@@ -28,7 +28,7 @@
     "typecheck": "tsc --noEmit",
     "lint": "eslint . --ext .ts",
     "lint:fix": "eslint . --ext .ts --fix",
-    "test": "vitest run",
+    "test": "vitest run --fileParallelism=false",
     "prepack": "npm run build && npm run typecheck",
     "pack:dry": "npm pack --dry-run"
   },
diff --git a/packages/atxp-server/package.json b/packages/atxp-server/package.json
index c66c6c4..2027ee2 100644
--- a/packages/atxp-server/package.json
+++ b/packages/atxp-server/package.json
@@ -33,7 +33,7 @@
     "typecheck": "tsc --noEmit",
     "lint": "eslint . --ext .ts",
     "lint:fix": "eslint . --ext .ts --fix",
-    "test": "vitest run",
+    "test": "vitest run --fileParallelism=false",
     "prepack": "npm run build && npm run typecheck && rm -rf dist/node_modules dist/_virtual",
     "pack:dry": "npm pack --dry-run"
   },