diff --git a/artiq/devices/ctlmgr.py b/artiq/devices/ctlmgr.py
index 143bcfb38..c9b320602 100644
--- a/artiq/devices/ctlmgr.py
+++ b/artiq/devices/ctlmgr.py
@@ -86,7 +86,7 @@ class Controller:
                     self.process = await asyncio.create_subprocess_exec(
                         *shlex.split(self.command),
                         stdout=subprocess.PIPE, stderr=subprocess.PIPE,
-                        env=env)
+                        env=env, start_new_session=True)
                     asyncio.ensure_future(
                         LogParser(self._get_log_source).stream_task(
                             self.process.stdout))
diff --git a/artiq/gui/applets.py b/artiq/gui/applets.py
index d757c16e1..b25ac1829 100644
--- a/artiq/gui/applets.py
+++ b/artiq/gui/applets.py
@@ -116,7 +116,8 @@ class AppletDock(QDockWidgetCloseDetect):
         )
         logger.debug("starting command %s for %s", command, self.applet_name)
         try:
-            await self.ipc.create_subprocess(*shlex.split(command))
+            await self.ipc.create_subprocess(*shlex.split(command),
+                                             start_new_session=True)
         except:
             logger.warning("Applet %s failed to start", self.applet_name,
                            exc_info=True)
diff --git a/artiq/master/worker.py b/artiq/master/worker.py
index 0afc11c78..3ac6278ac 100644
--- a/artiq/master/worker.py
+++ b/artiq/master/worker.py
@@ -87,7 +87,7 @@ class Worker:
                 sys.executable, "-m", "artiq.master.worker_impl",
                 self.ipc.get_address(), str(log_level),
                 stdout=subprocess.PIPE, stderr=subprocess.PIPE,
-                env=env)
+                env=env, start_new_session=True)
             asyncio.ensure_future(
                 LogParser(self._get_log_source).stream_task(
                     self.ipc.process.stdout))