diff --git a/pyproject.toml b/pyproject.toml
index f0e9bd98..2e82efea 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -75,7 +75,7 @@ development = [
     'pydocstyle==6.3.0',
     'radon==6.0.1',
     'xenon==0.9.3',
-    'types-PyYAML==6.0.12.20250326',
+    'types-PyYAML==6.0.12.20250402',
     'codespell==2.4.1',
     'mypy==1.15.0',
     #'flake8==5.0.4', # version 6.x.x requires python >= 3.8.1 (but 3.7 support window is until 2023-06-27)