diff --git a/infrastructure/abri/abri_client.py b/infrastructure/abri/abri_client.py
index bd63f056a..9731431e2 100644
--- a/infrastructure/abri/abri_client.py
+++ b/infrastructure/abri/abri_client.py
@@ -10,6 +10,7 @@ from domain.abri.models import (
 )
 from infrastructure.abri.config import AbriConfig
 from infrastructure.abri.envelope import serialise_relay_request
+from infrastructure.abri.errors import AbriTransportError
 
 STD_JOB_CODE = "SCSEXT"
 CLIENT_CODE = "HSG"
@@ -39,7 +40,11 @@ class AbriClient:
             username=self._config.username,
             password=self._config.password,
         )
-        response = self._session.post(self._config.endpoint_url, data=body)
+        try:
+            response = self._session.post(self._config.endpoint_url, data=body)
+            response.raise_for_status()
+        except requests.HTTPError as error:
+            raise AbriTransportError(str(error)) from error
         root = ET.fromstring(response.content)
         if root.tag == "response":
             return self._parse_rejection(root)