diff --git a/hooks/install/gen-sbom-package-info.py b/hooks/install/gen-sbom-package-info.py
index 38948dd..989197f 100755
--- a/hooks/install/gen-sbom-package-info.py
+++ b/hooks/install/gen-sbom-package-info.py
@@ -26,6 +26,7 @@
 
 
 SBOM_INFO_FILE_NAME = "sbom-pkg-info.json"
+SPDX_NOASSERTION = "NOASSERTION"
 
 
 class SbomPackageInfo:
@@ -110,8 +111,10 @@
         ) = licenses.get_licenses(build_info_dir, src_path, package_name)
         sbom_pkg_info.go_dep = go_dep.get_go_dep(src_path)
 
+        # Since download location is not required by the EO, failure to
+        # find download location shouldn't be fatal.
         if not sbom_pkg_info.download_url and not sbom_pkg_info.private:
-            raise SBOMPkgInfoError(f"download url not found")
+            sbom_pkg_info.download_url = SPDX_NOASSERTION
         if not sbom_pkg_info.licenses:
             sbom_pkg_info.licenses = "NONE"
     except Exception as e: