diff --git a/release/update-manpages b/release/update-manpages
index 6679b1790..0423fffac 100755
--- a/release/update-manpages
+++ b/release/update-manpages
@@ -23,4 +23,5 @@ import sys
 import update_manpages
 
 
-sys.exit(update_manpages.main(sys.argv[1:]))
+if __name__ == "__main__":
+    sys.exit(update_manpages.main(sys.argv[1:]))
diff --git a/tests/test_release_update_manpages.py b/tests/test_release_update_manpages.py
new file mode 100644
index 000000000..7b2eaef69
--- /dev/null
+++ b/tests/test_release_update_manpages.py
@@ -0,0 +1,43 @@
+# Copyright (C) 2026 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Tests for the release/update-manpages wrapper."""
+
+import runpy
+import sys
+from types import ModuleType
+
+import pytest
+import utils_for_test
+
+
+UPDATE_MANPAGES_SCRIPT = (
+    utils_for_test.THIS_DIR.parent / "release" / "update-manpages"
+)
+
+
+def test_wrapper_does_not_run_main_for_multiprocessing_child(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    """Do not rerun main when multiprocessing re-executes the wrapper."""
+    fake_update_manpages = ModuleType("update_manpages")
+
+    # Mock this because the real module requires newer Python versions than
+    # our unittest framework does.
+    monkeypatch.setitem(sys.modules, "update_manpages", fake_update_manpages)
+
+    runpy.run_path(
+        str(UPDATE_MANPAGES_SCRIPT),
+        run_name="__mp_main__",
+    )