diff --git a/requirements3.txt b/requirements3.txt
index a3be93f..34c1d04 100644
--- a/requirements3.txt
+++ b/requirements3.txt
@@ -1,7 +1,7 @@
 joblib==0.14.1
 numpy==1.18.5
 pkg-resources==0.0.0
-PyYAML==5.3.1
+PyYAML==5.4
 scikit-learn==0.22.2.post1
 scipy==1.4.1
 tqdm==4.46.1