diff --git a/setup.cfg b/setup.cfg
index e8c847b..e3cca47 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -60,7 +60,7 @@ testing =
 	lxml
         pytest
 css_inlining =
-	css_inline >= 0.11, < 0.12        # >= 0.11, < 0.12: CSSInliner(inline_style_tags=..., keep_link_tags=..., keep_style_tags=...)
+	css_inline >= 0.11, < 0.14        # >= 0.11, < 0.14: CSSInliner(inline_style_tags=..., keep_link_tags=..., keep_style_tags=...)
 
 
 [options.entry_points]