diff --git a/src/archivematica/MCPClient/client/pool.py b/src/archivematica/MCPClient/client/pool.py
index a57d52d0ae..17266496cf 100644
--- a/src/archivematica/MCPClient/client/pool.py
+++ b/src/archivematica/MCPClient/client/pool.py
@@ -144,7 +144,7 @@ def stop(self) -> None:
 
         for worker in self.workers:
             if worker.is_alive():
-                worker.join(0.1)
+                worker.join(30)
 
         for worker in self.workers:
             if worker.is_alive():