diff --git a/requirements.txt b/requirements.txt
index e290d14..027d993 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 gensim==3.5.0
 numpy==1.14.5
-PyYAML==5.1
+PyYAML==5.4
 torch==0.4.1