diff --git a/monkey/monkey_island/requirements.txt b/monkey/monkey_island/requirements.txt
index 9525d2d33..4a384990d 100644
--- a/monkey/monkey_island/requirements.txt
+++ b/monkey/monkey_island/requirements.txt
@@ -1,7 +1,7 @@
 Flask-JWT>=0.3.2
 Flask-Pymongo>=2.3.0
 Flask-Restful>=0.3.8
-PyInstaller>=4.0
+PyInstaller
 awscli>=1.18
 boto3>=1.14
 botocore>=1.17.18,<1.18.0