diff --git a/conf.py b/conf.py
index 561573dc9..b4dcb85b0 100644
--- a/conf.py
+++ b/conf.py
@@ -386,6 +386,16 @@ def source_read_replace(app, docname, source):
         result = result.replace(f"{{{key}}}", app.config.source_read_replace_vals[key])
     source[0] = result
 
+def upgrade_util_signature_rewrite(app, domain, objtype, contentnode):
+    # Same as add_module_names=False but **only** for odoo.upgrade.util functions or classes
+    signature = contentnode.parent[0]
+    if objtype == 'function' and signature.astext().startswith('odoo.upgrade.util.'):
+        # <odoo.upgrade.util.modules>, <modules_installed>, <(cr, *modules)>
+        signature.pop(0)
+    if objtype == 'class' and signature.astext().startswith('class odoo.upgrade.util.'):
+        # <class >, <odoo.upgrade.util.pg.>, <PGRegexp>
+        signature.pop(1)
+
 def setup(app):
     # Generate all alternate URLs for each document
     app.add_config_value('project_root', None, 'env')
@@ -395,6 +405,7 @@ def setup(app):
     app.add_config_value('is_remote_build', None, 'env')  # Whether the build is remotely deployed
     app.add_config_value('source_read_replace_vals', {}, 'env')
     app.connect('source-read', source_read_replace)
+    app.connect('object-description-transform', upgrade_util_signature_rewrite)
     # TODO uncomment after moving to >= v7.2.5 to also substitute placeholders in included  files.
     #  See https://github.com/sphinx-doc/sphinx/commit/ff1831
     #  app.connect('include-read', source_read_replace)