diff --git a/doc/source/index.rst b/doc/source/index.rst
index 86db66f7b2..b8445650dc 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -93,6 +93,8 @@ Limitations
   * The ``ansys.acp.core.mechanical_integration_helpers`` module may be
     changed or removed in future versions, when the corresponding features
     are available in PyMechanical directly.
+  * Post-processing with the Composite Failure Tool inside Mechanical is not
+    yet supported.
 
 * Visualization and mesh data of imported plies are not supported yet.
 * Section cuts cannot be visualized.