diff --git a/pyproject.toml b/pyproject.toml
index d4e56e7f1..41b167d39 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -281,7 +281,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-    "PyYAML==6.0",
+    "PyYAML==6.0.1",
     "Sphinx-Substitution-Extensions==2022.2.16",
     "Sphinx==7.0.1",
     "VWS-Test-Fixtures==2023.3.5",