diff --git a/requirements.txt b/requirements.txt
index dbcef59..f7d51d6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ odfpy==1.3.6
 olefile==0.44
 openpyxl==2.5.0
 Pillow==4.0.0
-PyYAML==5.1
+PyYAML==5.4
 requests==2.20.0
 tablib==0.12.1
 unicodecsv==0.14.1