diff --git a/Containerfile b/Containerfile
index c54dd191..4e06429e 100644
--- a/Containerfile
+++ b/Containerfile
@@ -41,6 +41,7 @@ apk add --no-cache --virtual .build-deps \
   musl-dev \
   openldap-dev
 apk add --no-cache \
+  aria2 \
   cdrkit \
   coreutils \
   git \
diff --git a/osism/commands/manage.py b/osism/commands/manage.py
index 03db4257..1d2a53e1 100644
--- a/osism/commands/manage.py
+++ b/osism/commands/manage.py
@@ -468,8 +468,12 @@ def take_action(self, parsed_args):
             "--cloud",
             cloud,
             "--deactivate",
+            # One web-download attempt only: the amphora image source is
+            # chronically slow, so retrying web-download just wastes another
+            # multi-minute doomed transfer. On the first failure the default
+            # --prefetch on-stuck falls back to aria2 + glance-direct.
             "--stuck-retry",
-            "1",
+            "0",
         ]
 
         task_signature = openstack.image_manager.si(
@@ -481,7 +485,10 @@ def take_action(self, parsed_args):
                 f"It takes a moment until task {task.task_id} (image-manager) has been started and output is visible here."
             )
 
-        return handle_task(task, wait, format="script", timeout=3600)
+        # A larger budget than the other image tasks: on a stuck web-download
+        # the image-manager falls back to aria2 + glance-direct, which adds a
+        # local download and staging on top of the import.
+        return handle_task(task, wait, format="script", timeout=5400)
 
 
 class Images(Command):