diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index d17da41..1efc051
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 psycopg2_binary==2.8.3
-celery==4.3.0
+celery==5.2.2
 cryptography==2.7
 click==7.0
 Flask==1.1.1