diff --git a/cours/source/conf.py b/cours/source/conf.py
index 26d93a7..9493a3d 100644
--- a/cours/source/conf.py
+++ b/cours/source/conf.py
@@ -11,6 +11,7 @@ language = "fr"
 
 templates_path = ["_templates"]
 exclude_patterns = []
+keep_warnings = True
 
 html_show_sourcelink = False
 html_theme_path = [sphinx_nameko_theme.get_html_theme_path()]