diff --git a/policyuniverse/arn.py b/policyuniverse/arn.py
index 9aa07d6..d2d2f06 100644
--- a/policyuniverse/arn.py
+++ b/policyuniverse/arn.py
@@ -78,3 +78,10 @@ def _from_account_number(self, raw):
     def _from_aws_service(self, service):
         self.tech = service
         self.service = True
+
+    def __hash__(self):
+        return hash(self.arn)
+
+    def __eq__(self, other):
+        if isinstance(other, ARN):
+            return self.__hash__() == other.__hash__()