diff --git a/requirements/base.txt b/requirements/base.txt
index c346440..2a362b1 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -11,7 +11,7 @@ xlwt==1.3.0
 odfpy==1.4.0
 xlrd==1.2.0
 unicodecsv==0.14.1
-pyyaml==3.13
+pyyaml==5.4
 jdcal==1.4
 et-xmlfile==1.0.1
 openpyxl==2.5.14