diff --git a/requirements.txt b/requirements.txt
index 45d3a9a..8b63ad9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ SQLAlchemy-Utils==0.34.2
 
 # Data and workers.
 redis==3.3.7
-celery==4.3.0
+celery==5.2.2
 
 # API.
 flask-classful==0.14