diff --git a/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -810,6 +810,8 @@
             'mercurial.pure',
             'mercurial.thirdparty',
             'mercurial.thirdparty.attr',
+            'mercurial.thirdparty.cbor',
+            'mercurial.thirdparty.cbor.cbor2',
             'mercurial.utils',
             'hgext', 'hgext.convert', 'hgext.fsmonitor',
             'hgext.fsmonitor.pywatchman', 'hgext.highlight',