diff --git a/monkey/monkey_island/cc/models/machine.py b/monkey/monkey_island/cc/models/machine.py
index 99d4ae5eb..ece877b9e 100644
--- a/monkey/monkey_island/cc/models/machine.py
+++ b/monkey/monkey_island/cc/models/machine.py
@@ -38,3 +38,6 @@ class Machine(MutableInfectionMonkeyBaseModel):
     _make_immutable_sequence = validator("network_interfaces", pre=True, allow_reuse=True)(
         make_immutable_sequence
     )
+
+    def __hash__(self):
+        return self.id