diff --git a/requirements.txt b/requirements.txt
index 0a56ee50218724ae4cff39ce32bc662f0523f39d..cb9a502b9649f31a1e9003a4558699e706c74c8d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -61,7 +61,7 @@ six==1.10.0
 snowballstemmer==1.2.1
 
 # Scheduled tasks
-celery[yaml]==4.2.1
+celery==4.2.1
 django-celery-results==1.0.1
 django-celery-beat==1.1.1
 flower==0.9.2