diff --git a/setup.py b/setup.py
index 4867a4fbd84354ab6128d5640f7525dcd4456ec4..1085f30dad2caaba6365ab2aff58495e04337333 100644
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@ setuptools.setup(
         "beautifulsoup4~=4.12",
         "requests~=2.31",
         "ldap3~=2.9.1",
-        "PyYAML~=6.0",
+        "PyYAML>=5.4,<7.0",
         "check_syncrepl_extended~=2020.13",
         "check_nginx_status~=1.0",
     ],