diff --git a/src/pypelines/__init__.py b/src/pypelines/__init__.py
index 19bd5f6d07fcc3df0756589c1b4b1166428911e1..3dd76d2f2f90f157e98a91273ba5866490f477aa 100644
--- a/src/pypelines/__init__.py
+++ b/src/pypelines/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.0.52"
+__version__ = "0.0.53"
 
 from . import loggs
 from .pipes import *
diff --git a/src/pypelines/celery_tasks.py b/src/pypelines/celery_tasks.py
index b974038dd486e4d58b9cf6fa3d547e973b3b42e3..8f7c50d0a421fd9088dee33a2e704d68a70b1ec3 100644
--- a/src/pypelines/celery_tasks.py
+++ b/src/pypelines/celery_tasks.py
@@ -451,18 +451,20 @@ def create_celery_app(conf_path, app_name="pypelines", v_host=None) -> "Celery |
 
         return {"workers": workers, "task_names": task_names}
 
-    def get_celery_app_tasks(self, refresh=False):
+    def get_celery_app_tasks(
+        self, refresh=False, auto_refresh=3600 * 24, failed_refresh=60 * 5, initial_timeout=10, refresh_timeout=2
+    ):
 
         from datetime import datetime, timedelta
 
-        auto_refresh_time = timedelta(0, (3600 * 24))  # a full day (24 hours of 3600 seconds)
-        failed_refresh_retry_time = timedelta(0, (60 * 5))  # try to refresh after 5 minutes
+        auto_refresh_time = timedelta(0, seconds=auto_refresh)  # a full day (24 hours of 3600 seconds)
+        failed_refresh_retry_time = timedelta(0, failed_refresh)  # try to refresh after 5 minutes
 
         app_task_data = getattr(self, "task_data", None)
 
         if app_task_data is None:
             try:
-                task_data = self.tasks[f"{app_name}.tasks_infos"].delay(app_name).get(timeout=10)
+                task_data = self.tasks[f"{app_name}.tasks_infos"].delay(app_name).get(timeout=initial_timeout)
                 # we set timeout to 10 sec if the task data doesn't exist.
                 # It's long to wait for a webpage to load, but sometimes the workers take time to come out of sleep
                 app_task_data = {"task_data": task_data, "refresh_time": datetime.now() + auto_refresh_time}
@@ -484,7 +486,7 @@ def create_celery_app(conf_path, app_name="pypelines", v_host=None) -> "Celery |
 
             if refresh:
                 try:
-                    task_data = self.tasks[f"{app_name}.tasks_infos"].delay(app_name).get(timeout=2)
+                    task_data = self.tasks[f"{app_name}.tasks_infos"].delay(app_name).get(timeout=refresh_timeout)
                     # if the data needs to be refreshed, we don't wait for as long as for a first get of infos.
                     app_task_data = {"task_data": task_data, "refresh_time": now + auto_refresh_time}
                     logger.warning("Refreshed celery tasks data sucessfully")
@@ -511,8 +513,8 @@ def create_celery_app(conf_path, app_name="pypelines", v_host=None) -> "Celery |
             result = self.tasks[f"{app_name}.handshake"].delay().get(timeout=1)
             logger.warning(f"Handshake result : {result}")
             return True
-        except ValueError:
-            logger.error("No handshake result. All workers are busy ?")
+        except Exception as e:
+            logger.error(f"No handshake result. All workers are busy ? {e}")
             return False
 
     settings_files = get_setting_files_path(conf_path)