diff --git a/taiga/mdrender/service.py b/taiga/mdrender/service.py
index f4c12108..0bac20cb 100644
--- a/taiga/mdrender/service.py
+++ b/taiga/mdrender/service.py
@@ -77,6 +77,7 @@ def _make_extensions_list(project=None):
             "extra",
             "codehilite",
             "sane_lists",
+            "toc",
             "nl2br"]