diff --git a/minimum-constraints.txt b/minimum-constraints.txt
index f864d4d..e5c55ed 100644
--- a/minimum-constraints.txt
+++ b/minimum-constraints.txt
@@ -62,7 +62,7 @@ wheel==0.33.6; python_version >= '3.8'
 # funcsigs; is covered in direct deps for develop, from mock
 
 # PyYAML is pulled in by python-coveralls
-PyYAML==5.1
+PyYAML==5.4
 
 
 # Direct dependencies for development (must be consistent with dev-requirements.txt)