diff --git a/STL_Extension/doc/STL_Extension/dependencies b/STL_Extension/doc/STL_Extension/dependencies
index a28909c2b4f..04ce3232efc 100644
--- a/STL_Extension/doc/STL_Extension/dependencies
+++ b/STL_Extension/doc/STL_Extension/dependencies
@@ -5,3 +5,4 @@ Manual
 Miscellany
 Number_types
 Surface_mesh
+Triangulation_3