diff --git a/code-env/python/spec/requirements.txt b/code-env/python/spec/requirements.txt
old mode 100755
new mode 100644
index 48e534c..e075733
--- a/code-env/python/spec/requirements.txt
+++ b/code-env/python/spec/requirements.txt
@@ -1,5 +1,5 @@
 networkx==2.4
-flask==1.1.2
+flask==2.3.2
 matplotlib==3.2.1
 scipy==1.4.1
 simplejson==3.17.0