diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 99ea5de..96145e2
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ anyjson==0.3.3
 arrow==0.12.0
 billiard==3.5.0.3
 blinker==1.4
-celery==4.1.0
+celery==5.2.2
 click==6.7
 Flask==0.12.2
 Flask-DebugToolbar==0.10.1