diff --git a/requirements.txt b/requirements.txt
index 2c4a80e..7834bb4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ olefile==0.44
 Pillow==4.3.0
 pytesseract==0.1.7
 pytz==2017.3
-PyYAML==3.12
+PyYAML==5.4
 redis==2.10.6
 requests==2.11.1
 six==1.11.0