diff --git a/package.json b/package.json
index aeab43b..650fc3e 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,8 @@
       "ts-jest": {
         "tsConfig": "tsconfig.json"
       }
-    }
+    },
+    "testEnvironment": "node"
   },
   "homepage": "https://github.com/h3poteto/megalodon#readme",
   "dependencies": {