diff --git a/requirements.txt b/requirements.txt
index b5dba231..80402a2b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -82,7 +82,7 @@ pytest-flask ~=1.2
 # Anything 4.0 and up but not 5.0
 jsonschema ~= 4.0
 
-apscheduler
+apscheduler ~= 3.9
 loguru
 
 # For scraping all possible metadata relating to products so we can do better restock detection