diff --git a/doc/api/v2/config/layer.rst b/doc/api/v2/config/layer.rst
index daee55b7f9adfffdf709ed2b5b0d957c7ca1aea4..ec7f1446cfb74842af7d0c7152bebf58619f3861 100644
--- a/doc/api/v2/config/layer.rst
+++ b/doc/api/v2/config/layer.rst
@@ -198,6 +198,10 @@ identity_projection
 ..  autoclass:: paddle.v2.layer.identity_projection
     :noindex:
 
+slice_projection
+-------------------
+..  autoclass:: paddle.v2.layer.slice_projection
+    :noindex:
 
 table_projection
 ----------------