diff --git a/requirements.txt b/requirements.txt
index 0640c812..0f0b134b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,3 +36,4 @@ greenlet==3.0.3
 pydantic_settings==2.4.0
 Authlib==1.3.1
 python-jose==3.3.0
+portalocker==2.8.2
diff --git a/src/cnaas_nms/scheduler/scheduler.py b/src/cnaas_nms/scheduler/scheduler.py
index a671b242..ac4e5cbe 100644
--- a/src/cnaas_nms/scheduler/scheduler.py
+++ b/src/cnaas_nms/scheduler/scheduler.py
@@ -1,11 +1,11 @@
 import datetime
-import fcntl
 import inspect
 import json
 import os
 from types import FunctionType
 from typing import Optional, Union
 
+import portalocker
 from apscheduler.executors.pool import ThreadPoolExecutor
 from apscheduler.jobstores.memory import MemoryJobStore
 from apscheduler.jobstores.sqlalchemy import SQLAlchemyJobStore
@@ -36,8 +36,8 @@ def __init__(self):
         # If scheduler is already started, use uwsgi ipc to send job to mule process
         self.lock_f = open("/tmp/scheduler.lock", "w")
         try:
-            fcntl.lockf(self.lock_f, fcntl.LOCK_EX | fcntl.LOCK_NB)
-        except BlockingIOError:
+            portalocker.lock(self.lock_f, flags=portalocker.LOCK_EX | portalocker.LOCK_NB)
+        except portalocker.exceptions.LockException:
             try:
                 import uwsgi  # noqa: F401
             except Exception:
@@ -80,7 +80,7 @@ def __init__(self):
 
     def __del__(self):
         if self.lock_f:
-            fcntl.lockf(self.lock_f, fcntl.LOCK_UN)
+            portalocker.unlock(self.lock_f)
             self.lock_f.close()
             os.unlink("/tmp/scheduler.lock")