diff --git a/requirements.txt b/requirements.txt
index 211d487..bbb2a07 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ odfpy==1.4.0
 openpyxl==2.6.0
 Pillow==5.4.1
 pytz==2018.9
-PyYAML==3.13
+PyYAML==5.4
 redis==3.2.0
 requests==2.21.0
 six==1.12.0