diff --git a/setup.py b/setup.py
index be8f3186..b1823f17 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,8 @@ requirements = [
     "python-registry>=1.3.1",
     "keystone-engine>=0.9.2",
     "pyelftools>=0.26",
-    "gevent>=20.9.0"
+    "gevent>=20.9.0",
+    "multiprocess>=0.70.12.2"
 ]
 
 evm_extra = {
diff --git a/tests/test_pe.py b/tests/test_pe.py
index 5e943770..39b6cd88 100644
--- a/tests/test_pe.py
+++ b/tests/test_pe.py
@@ -16,7 +16,7 @@ from qiling.os.const import *
 from qiling.os.windows.fncc import *
 from qiling.os.windows.utils import *
 from qiling.os.mapper import QlFsMappedObject
-import multiprocessing as mb
+import multiprocess as mb
 
 class QLWinSingleTest: