diff --git a/machine_learning_algorithms_from_scratch/code/lda/app-tic-tac-toe/requirements.txt b/machine_learning_algorithms_from_scratch/code/lda/app-tic-tac-toe/requirements.txt
index 8a61f5c..96e1326 100644
--- a/machine_learning_algorithms_from_scratch/code/lda/app-tic-tac-toe/requirements.txt
+++ b/machine_learning_algorithms_from_scratch/code/lda/app-tic-tac-toe/requirements.txt
@@ -1,5 +1,5 @@
 Babel==1.3
-Flask==0.10.1
+Flask==1.0
 Flask-Babel==0.9
 Flask-Login==0.2.11
 Flask-Mail==0.9.0