diff --git a/papyri/render.py b/papyri/render.py
index e62484a8..66955c59 100644
--- a/papyri/render.py
+++ b/papyri/render.py
@@ -23,7 +23,7 @@
 try:
     import minify_html
 except ModuleNotFoundError:
-    minify_html = None
+    minify_html = None  # type: ignore[assignment]
 
 from . import config as default_config
 from . import take2
diff --git a/pyproject.toml b/pyproject.toml
index 493e88d8..4d2421cf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,5 +51,5 @@ filterwarnings = "ignore:The module numpy.dual.*:DeprecationWarning"
 Home = "https://github.com/Carreau/papyri"
 
 [tool.mypy]
-python_version = 3.10
+python_version = '3.10'
 ignore_missing_imports = true