diff --git a/examples/pythonwebinar/requirements.txt b/examples/pythonwebinar/requirements.txt
old mode 100755
new mode 100644
index 7e5aed0..5436f5e
--- a/examples/pythonwebinar/requirements.txt
+++ b/examples/pythonwebinar/requirements.txt
@@ -1,5 +1,5 @@
 geoip2==2.9.0
 beautifulsoup4==4.8.0
 requests==2.22.0
-Flask==1.1.1
+Flask==2.3.2
 dpkt==1.9.2