diff --git a/Lib/multiprocessing/managers.py b/Lib/multiprocessing/managers.py
index b6b4cdd9ac15eb..22292c78b7b5b3 100644
--- a/Lib/multiprocessing/managers.py
+++ b/Lib/multiprocessing/managers.py
@@ -677,7 +677,7 @@ def _finalize_manager(process, address, authkey, state, _Client):
                 if hasattr(process, 'terminate'):
                     util.info('trying to `terminate()` manager process')
                     process.terminate()
-                    process.join(timeout=0.1)
+                    process.join(timeout=1.0)
                     if process.is_alive():
                         util.info('manager still alive after terminate')