diff --git a/requirements.txt b/requirements.txt
index 1972e7d..e2d1e1f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-Flask==2.1.0
+Flask==1.1.2
 selenium==3.141.0
 PyYAML~=6.0
 pony==0.7.16