diff --git a/tum_esm_utils/processes.py b/tum_esm_utils/processes.py
index f2ac56e..76bbf77 100644
--- a/tum_esm_utils/processes.py
+++ b/tum_esm_utils/processes.py
@@ -50,7 +50,18 @@ def terminate_process(script_path: str) -> list[int]:
     """Terminate all processes that have the given script as their
     entrypoint. Returns the list of terminated PIDs."""
 
-    termination_pids = get_process_pids(script_path)
-    for pid in termination_pids:
-        os.system(f"kill {pid}")
+    termination_pids: list[int] = []
+    for p in psutil.process_iter():
+        try:
+            if p.cmdline()[1] == script_path:
+                termination_pids.append(p.pid)
+                p.kill()
+        except (
+            psutil.AccessDenied,
+            psutil.ZombieProcess,
+            psutil.NoSuchProcess,
+            IndexError,
+        ):
+            pass
+
     return termination_pids