diff --git a/1.2/HalPolicy.hpp b/1.2/HalPolicy.hpp
index f689613..7468313 100644
--- a/1.2/HalPolicy.hpp
+++ b/1.2/HalPolicy.hpp
@@ -67,6 +67,8 @@
     static bool ConvertSpaceToDepth(const Operation& operation, const Model& model, ConversionData& data);
 
     static bool ConvertTanH(const Operation& operation, const Model& model, ConversionData& data);
+
+    static bool ConvertLstm(const Operation& operation, const Model& model, ConversionData& data);
 };
 
 } // namespace hal_1_2