diff --git a/pyproject.toml b/pyproject.toml
index 61c78a3..7a3c98d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ classifiers = [
 ]
 dependencies = [
     "numpy>=1.21",
-    "pyyaml>=6.0",
+    "pyyaml>=6.0.3",
 ]
 
 [project.optional-dependencies]