diff --git a/haystack/management/commands/update_index.py b/haystack/management/commands/update_index.py
index d31ef12ee..55087d26d 100755
--- a/haystack/management/commands/update_index.py
+++ b/haystack/management/commands/update_index.py
@@ -228,6 +228,7 @@ def handle_label(self, label, **options):
             if self.workers > 0:
                 pool = multiprocessing.Pool(self.workers)
                 pool.map(worker, ghetto_queue)
+                pool.terminate()
 
             if self.remove:
                 if self.start_date or self.end_date or total <= 0:
@@ -251,3 +252,4 @@ def handle_label(self, label, **options):
                 if self.workers > 0:
                     pool = multiprocessing.Pool(self.workers)
                     pool.map(worker, ghetto_queue)
+                    pool.terminate()