diff --git a/requirements.txt b/requirements.txt
index 82ddb96..a8ee00e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 argparse==1.4.0
 h5py==2.10.0
-PyYAML==5.1.2
+PyYAML==5.4
 Pillow==6.2.1
 numpy==1.17.3
 scipy==1.3.1