diff --git a/mercurial/utils/__init__.py b/mercurial/utils/__init__.py
new file mode 100644
diff --git a/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -790,6 +790,7 @@
             'mercurial.pure',
             'mercurial.thirdparty',
             'mercurial.thirdparty.attr',
+            'mercurial.utils',
             'hgext', 'hgext.convert', 'hgext.fsmonitor',
             'hgext.fsmonitor.pywatchman', 'hgext.highlight',
             'hgext.largefiles', 'hgext.lfs', 'hgext.zeroconf', 'hgext3rd',