diff --git a/api/onnx_web/worker/pool.py b/api/onnx_web/worker/pool.py
index ae386893..44ecc824 100644
--- a/api/onnx_web/worker/pool.py
+++ b/api/onnx_web/worker/pool.py
@@ -1,4 +1,5 @@
 from collections import Counter
+from functools import partial
 from logging import getLogger
 from queue import Empty
 from threading import Thread
@@ -106,7 +107,7 @@ class DevicePoolExecutor:
         self.context[name] = context
         worker = Process(
             name=f"onnx-web worker: {name}",
-            target=worker_main,
+            target=partial(worker_main, self),
             args=(context, self.server),
         )
 
@@ -116,24 +117,8 @@ class DevicePoolExecutor:
         current.value = worker.pid
 
     def create_logger_worker(self) -> None:
-        def logger_worker(logs: Queue):
-            logger.trace("checking in from logger worker thread")
-
-            while True:
-                try:
-                    job = logs.get(timeout=(self.join_timeout / 2))
-                    with open("worker.log", "w") as f:
-                        logger.info("got log: %s", job)
-                        f.write(str(job) + "\n\n")
-                except Empty:
-                    pass
-                except ValueError:
-                    break
-                except Exception:
-                    logger.exception("error in log worker")
-
         logger_thread = Thread(
-            name="onnx-web logger", target=logger_worker, args=(self.logs,), daemon=True
+            name="onnx-web logger", target=logger_main, args=(self.logs,), daemon=True
         )
         self.threads["logger"] = logger_thread
 
@@ -141,22 +126,9 @@ class DevicePoolExecutor:
         logger_thread.start()
 
     def create_progress_worker(self) -> None:
-        def progress_worker(queue: "Queue[ProgressCommand]"):
-            logger.trace("checking in from progress worker thread")
-            while True:
-                try:
-                    progress = queue.get(timeout=(self.join_timeout / 2))
-                    self.update_job(progress)
-                except Empty:
-                    pass
-                except ValueError:
-                    break
-                except Exception:
-                    logger.exception("error in progress worker")
-
         progress_thread = Thread(
             name="onnx-web progress",
-            target=progress_worker,
+            target=partial(progress_main, self),
             args=(self.progress,),
             daemon=True,
         )
@@ -444,3 +416,32 @@ class DevicePoolExecutor:
                     progress.device,
                 )
                 self.context[progress.device].set_cancel()
+
+def logger_main(pool: DevicePoolExecutor, logs: Queue):
+    logger.trace("checking in from logger worker thread")
+
+    while True:
+        try:
+            job = logs.get(timeout=(pool.join_timeout / 2))
+            with open("worker.log", "w") as f:
+                logger.info("got log: %s", job)
+                f.write(str(job) + "\n\n")
+        except Empty:
+            pass
+        except ValueError:
+            break
+        except Exception:
+            logger.exception("error in log worker")
+
+def progress_main(pool: DevicePoolExecutor, queue: "Queue[ProgressCommand]"):
+    logger.trace("checking in from progress worker thread")
+    while True:
+        try:
+            progress = queue.get(timeout=(pool.join_timeout / 2))
+            pool.update_job(progress)
+        except Empty:
+            pass
+        except ValueError:
+            break
+        except Exception:
+            logger.exception("error in progress worker")