diff --git a/thehive4py/endpoints/observable.py b/thehive4py/endpoints/observable.py
index 8a510881..2141a20e 100644
--- a/thehive4py/endpoints/observable.py
+++ b/thehive4py/endpoints/observable.py
@@ -111,3 +111,18 @@ def count(self, filters: Optional[FilterExpr] = None) -> int:
             params={"name": "observable.count"},
             json={"query": query},
         )
+
+    def download_attachment(
+        self,
+        observable_id: str,
+        attachment_id: str,
+        observable_path: str,
+        as_zip: bool = False
+    ) -> None:
+        return self._session.make_request(
+            "GET",
+            path=(f"/api/v1/observable/{observable_id}"
+                  f"/attachment/{attachment_id}/download"),
+            params={"asZip": as_zip},
+            download_path=observable_path,
+        )