diff --git a/pyproject.toml b/pyproject.toml
index f828008..74cfee8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ mkdocs-material = "^9.0.2"
 mkdocstrings = ">=0.20,<0.26"
 mkdocstrings-python = ">=0.8,<1.11"
 requests-mock = "^1.11.0"
-validate-pyproject = ">=0.16,<0.19"
+validate-pyproject = ">=0.16,<0.20"
 pytest-cov = "^5.0.0"
 
 [tool.poetry.dependencies]