--- a/taskcluster/taskgraph/transforms/release_generate_checksums_signing.py
+++ b/taskcluster/taskgraph/transforms/release_generate_checksums_signing.py
@@ -9,16 +9,17 @@ from __future__ import absolute_import, 
 
 from taskgraph.transforms.base import TransformSequence
 from taskgraph.util.attributes import copy_attributes_from_dependent_job
 from taskgraph.util.schema import validate_schema, Schema
 from taskgraph.util.scriptworker import (
     get_signing_cert_scope,
     get_worker_type_for_scope,
 )
+from taskgraph.util.taskcluster import get_artifact_path
 from taskgraph.transforms.task import task_description_schema
 from voluptuous import Required, Optional
 
 # Voluptuous uses marker objects as dictionary *keys*, but they are not
 # comparable, so we cast all of the keys back to regular strings
 task_description_schema = {str(k): v for k, v in task_description_schema.schema.iteritems()}
 
 transforms = TransformSequence()
@@ -65,18 +66,18 @@ def make_release_generate_checksums_sign
         dependencies = {
             "build": dep_job.label
         }
 
         upstream_artifacts = [{
             "taskId": {"task-reference": "<build>"},
             "taskType": "build",
             "paths": [
-                "public/build/SHA256SUMS",
-                "public/build/SHA512SUMS",
+                get_artifact_path(dep_job, "SHA256SUMS"),
+                get_artifact_path(dep_job, "SHA512SUMS"),
             ],
             "formats": ["gpg"]
         }]
 
         signing_cert_scope = get_signing_cert_scope(config)
 
         task = {
             'label': label,