diff --git a/package.json b/package.json
index 88cad27..50bc46a 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
     "type": "module",
     "version": "1.0.0",
     "scripts": {
-        "test": "jest --maxConcurrency=20"
+        "test": "jest --maxConcurrency=5"
     },
     "jest": {
         "preset": "ts-jest",