diff --git a/ansys/api/additive/VERSION b/ansys/api/additive/VERSION
index a4591ab..af1dddf 100644
--- a/ansys/api/additive/VERSION
+++ b/ansys/api/additive/VERSION
@@ -1 +1 @@
-1.6.0-dev5
\ No newline at end of file
+1.6.0-dev6
\ No newline at end of file
diff --git a/ansys/api/additive/v0/additive_simulation.proto b/ansys/api/additive/v0/additive_simulation.proto
index c07a555..e418ba4 100644
--- a/ansys/api/additive/v0/additive_simulation.proto
+++ b/ansys/api/additive/v0/additive_simulation.proto
@@ -35,6 +35,7 @@ message SimulationRequest {
 		MicrostructureInput microstructure_input = 12;
 		ThermalHistoryInput thermal_history_input = 13;
 		ThermalStrainInput thermal_strain_input = 14;
+		Microstructure3DInput microstructure_3d_input = 15;
 	}
 }