diff --git a/samples_2/lex-make-appointment-python/requirements.txt b/samples_2/lex-make-appointment-python/requirements.txt
index 6f5275b..2c24336 100644
--- a/samples_2/lex-make-appointment-python/requirements.txt
+++ b/samples_2/lex-make-appointment-python/requirements.txt
@@ -1 +1 @@
-requests==2.13.0
+requests==2.31.0