diff --git a/requirements.txt b/requirements.txt
index 1808e8a..2ce4450 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -55,7 +55,7 @@ pyrsistent==0.14.11
 pyTelegramBotAPI==3.5.2
 python-dateutil==2.8.0
 pytz==2019.1
-PyYAML==5.1
+PyYAML==5.4
 requests==2.19.1
 rusenttokenize==0.0.4
 scikit-learn==0.19.1