diff --git a/requirements.txt b/requirements.txt
index 66d9aa9..d1bbd47 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 typing-inspect>=0.4.0
-PyYAML<=6.0.1
+PyYAML<=6.0.1,!=5.4.1
 numpy<=1.23.5