diff --git a/plugins/DupFileManager/DupFileManager.yml b/plugins/DupFileManager/DupFileManager.yml
index 3d8650b9..bfd10c22 100644
--- a/plugins/DupFileManager/DupFileManager.yml
+++ b/plugins/DupFileManager/DupFileManager.yml
@@ -1,6 +1,6 @@
 name: DupFileManager
 description: Manages duplicate files.
-version: 1.0.2
+version: 1.0.3
 url: https://discourse.stashapp.cc/t/dupfilemanager/1331
 ui:
   javascript:
diff --git a/plugins/DupFileManager/StashPluginHelper.py b/plugins/DupFileManager/StashPluginHelper.py
index 07beba5e..1544e5a9 100644
--- a/plugins/DupFileManager/StashPluginHelper.py
+++ b/plugins/DupFileManager/StashPluginHelper.py
@@ -481,9 +481,12 @@ def executeProcess(self, args, ExecDetach=False):
                 if self.IS_LINUX:
                     args = ["nohup"] + args
                 self.Trace(f"Executing detached process using Popen({args})")
+                # start_new_session puts the child in its own session, so it survives the
+                # parent task process exiting (needed on macOS; harmless on Linux too).
+                pid = subprocess.Popen(args, start_new_session=True).pid
             else:
                 self.Trace(f"Executing process using normal Popen({args})")
-            pid = subprocess.Popen(args).pid # On detach, may need the following for MAC OS subprocess.Popen(args, shell=True, start_new_session=True)
+                pid = subprocess.Popen(args).pid
         self.Trace(f"pid={pid}")
         return pid