diff --git a/amlb/utils/process.py b/amlb/utils/process.py
index c32fad3b1..593ed1ff8 100644
--- a/amlb/utils/process.py
+++ b/amlb/utils/process.py
@@ -286,11 +286,17 @@ def on_proc_terminated(proc):
         children.append(parent)
     for proc in children:
         log.warning("Terminating process %s.", proc)
-        proc.terminate()
+        try:
+            proc.terminate()
+        except psutil.NoSuchProcess:
+            pass
     terminated, alive = psutil.wait_procs(children, timeout=timeout, callback=on_proc_terminated)
     for proc in alive:
         log.warning("Killing process %s.", proc)
-        proc.kill()
+        try:
+            proc.kill()
+        except psutil.NoSuchProcess:
+            pass
 
 
 def call_in_subprocess(target, *args, **kwargs):