diff --git a/backend/Dockerfile b/backend/Dockerfile
index 8e6b075..72aaa00 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -133,11 +133,11 @@ ENTRYPOINT ["tini", "--"]
 
 # Start Celery worker listening to all queues EXCEPT whisper
 # Whisper has a dedicated worker (see Stage 5) to prevent memory overload
-# --concurrency=4 for 4 worker processes (adjust based on CPU cores available)
+# --concurrency=8 for 8 worker processes (adjust based on CPU cores available)
 CMD ["celery", "-A", "celery_worker", "worker", \
      "-Q", "default,ingest,notify,render,ffmpeg", \
      "--loglevel=info", \
-     "--concurrency=4", \
+     "--concurrency=8", \
      "--max-tasks-per-child=100"]
 
 # -----------------------------------------------------------------------------
diff --git a/docker-compose.yml b/docker-compose.yml
index 50329d8..4abeb42 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -156,7 +156,7 @@ services:
     user: root
     command: >
       sh -c "chown -R app:app /shared-tmp &&
-             su app -c 'celery -A celery_worker worker -Q default,ingest,notify,render --loglevel=info --concurrency=4'"
+             su app -c 'celery -A celery_worker worker -Q default,ingest,notify,render --loglevel=info --concurrency=8'"
     depends_on:
       mongodb:
         condition: service_healthy