diff --git a/docs/01_03_delegate.dox b/docs/01_03_delegate.dox
index 92cdf6d..04f216a 100644
--- a/docs/01_03_delegate.dox
+++ b/docs/01_03_delegate.dox
@@ -165,6 +165,8 @@
 
 - TRANSPOSE_CONV
 
+- UNIDIRECTIONAL_SEQUENCE_LSTM
+
 - UNPACK
 
 More machine learning operators will be supported in future releases.