diff --git a/requirements.txt b/requirements.txt
index 0d544972..867ea15d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,5 +25,5 @@ tzlocal>=1.1.2
 email>=4.0.2
 Jinja2>=2.7.3
 PyMySQL>=0.6.2,!=0.6.4
-apscheduler>=3.0.1
-python_dateutil>=2.4.0
\ No newline at end of file
+apscheduler>=3.0.1,<3.1.0
+python_dateutil>=2.4.0