diff --git a/papers/SubTagger/requirements_pip.txt b/papers/SubTagger/requirements_pip.txt
index 768947c..7d9d660 100644
--- a/papers/SubTagger/requirements_pip.txt
+++ b/papers/SubTagger/requirements_pip.txt
@@ -29,7 +29,7 @@ docutils==0.14
 editdistance==0.5.3
 en-core-web-sm==2.1.0
 flaky==3.5.3
-Flask==1.0.3
+Flask==2.3.2
 Flask-Cors==3.0.8
 ftfy==5.5.1
 gast==0.2.2