diff --git a/elbepack/commands/cyclonedx-sbom.py b/elbepack/commands/cyclonedx-sbom.py
index 21e5b23ab..496c5d0bd 100644
--- a/elbepack/commands/cyclonedx-sbom.py
+++ b/elbepack/commands/cyclonedx-sbom.py
@@ -49,20 +49,23 @@ def _remove_empty_fields(dict):
 
 
 def _repository_url(uri):
-    uri_parts = uri.split('/')
-    if len(uri_parts) < 6:
-        raise ValueError('URI needs to be in pool layout')
-    if uri_parts[-4] == 'pool':
-        # http://deb.debian.org/debian/pool/a/adduser/adduser_3.134_all.deb
-        return '/'.join(uri_parts[:-4])
-    elif uri_parts[-5] == 'pool':
-        # http://deb.debian.org/debian/pool/main/a/adduser/adduser_3.134_all.deb
-        return '/'.join(uri_parts[:-5])
-    elif uri_parts[-6] == 'pool':
-        # http://deb.debian.org/debian-security/pool/updates/main/u/util-linux/bsdutils_2.38.1-5%2bdeb12u1_amd64.deb
-        return '/'.join(uri_parts[:-6])
-    else:
-        raise ValueError('URI needs to be in pool layout')
+    parsed = urllib.parse.urlsplit(uri)
+    path_parts = parsed.path.split('/')
+
+    if path_parts[-1].endswith('.deb'):
+        # Standard Debian layout: repository root is everything before /pool/.
+        if 'pool' in path_parts:
+            repo_path = '/'.join(path_parts[:path_parts.index('pool')])
+        else:
+            # Flat repository: repo URL is everything before the filename.
+            repo_path = '/'.join(path_parts[:-1])
+
+        if not repo_path:
+            repo_path = '/'
+
+        return urllib.parse.urlunsplit((parsed.scheme, parsed.netloc, repo_path, '', ''))
+
+    raise ValueError(f'Unexpected URI format: {uri}')
 
 
 def _purl_from_pkg(pkg):
diff --git a/elbepack/main.py b/elbepack/main.py
index 972986b55..47163385c 100644
--- a/elbepack/main.py
+++ b/elbepack/main.py
@@ -18,7 +18,7 @@ def get_cmdlist():
     return [x for _, x, _ in pkgutil.iter_modules(elbepack.commands.__path__)]
 
 
-def _import_cmd_module(cmd):
+def import_cmd_module(cmd):
     return importlib.import_module('.' + cmd, elbepack.commands.__name__)
 
 
@@ -37,7 +37,7 @@ def main(argv=sys.argv):
     logging.basicConfig()
     logging.getLogger('suds').setLevel(logging.WARNING)
 
-    cmdmod = _import_cmd_module(args.cmd)
+    cmdmod = import_cmd_module(args.cmd)
 
     try:
         cmdmod.run_command(cmd_argv)
@@ -48,5 +48,5 @@ def main(argv=sys.argv):
 
 
 def run_elbe_subcommand(argv):
-    cmdmod = _import_cmd_module(argv[0])
+    cmdmod = import_cmd_module(argv[0])
     return cmdmod.run_command([os.fspath(arg) for arg in argv[1:]])
diff --git a/elbepack/tests/cyclonedx/test_cyclonedx_sbom.py b/elbepack/tests/cyclonedx/test_cyclonedx_sbom.py
index b05864f64..228a44114 100644
--- a/elbepack/tests/cyclonedx/test_cyclonedx_sbom.py
+++ b/elbepack/tests/cyclonedx/test_cyclonedx_sbom.py
@@ -10,6 +10,8 @@
 
 import jsonschema
 
+import pytest
+
 try:
     import jsonschema._validators
 
@@ -33,7 +35,7 @@ def _extras_msg(extras):
     from jsonschema.validators import RefResolver
 
 
-from elbepack.main import run_elbe_subcommand
+from elbepack.main import import_cmd_module, run_elbe_subcommand
 
 here = pathlib.Path(__file__).parent
 
@@ -76,3 +78,28 @@ def test_reference_data():
 
     reference_errors = here.joinpath('cyclonedx_reference.json.errors').read_text()
     assert error_report == reference_errors
+
+
+@pytest.mark.parametrize('uri, expected_repository_url', [
+    (
+        'http://deb.debian.org/debian/pool/a/adduser/adduser_3.134_all.deb',
+        'http://deb.debian.org/debian',
+    ),
+    (
+        'http://deb.debian.org/debian/pool/main/a/adduser/adduser_3.134_all.deb',
+        'http://deb.debian.org/debian',
+    ),
+    (
+        'http://deb.debian.org/debian-security/pool/updates/main/u/util-linux/'
+        'bsdutils_2.38.1-5%2bdeb12u1_amd64.deb',
+        'http://deb.debian.org/debian-security',
+    ),
+    (
+        'https://deb.corporate.com/corp/foo/ethtool_6.14.2-1%7edeb13u1_arm64.deb',
+        'https://deb.corporate.com/corp/foo',
+    ),
+])
+def test_repository_url_examples(uri, expected_repository_url):
+    cyclonedx_sbom = import_cmd_module('cyclonedx-sbom')
+
+    assert cyclonedx_sbom._repository_url(uri) == expected_repository_url
diff --git a/newsfragments/+scyclonedx-sbom-flat-repos.rst b/newsfragments/+scyclonedx-sbom-flat-repos.rst
new file mode 100644
index 000000000..58252eab6
--- /dev/null
+++ b/newsfragments/+scyclonedx-sbom-flat-repos.rst
@@ -0,0 +1 @@
+Extend cyclonedx-sbom command to support flat repositories (e.g. minidinst).