diff --git a/ansys/api/additive/VERSION b/ansys/api/additive/VERSION
index 63f6712..79bda62 100644
--- a/ansys/api/additive/VERSION
+++ b/ansys/api/additive/VERSION
@@ -1 +1 @@
-5.1.4-dev0
+5.1.4-dev1
diff --git a/ansys/api/additive/v0/additive_domain.proto b/ansys/api/additive/v0/additive_domain.proto
index 13b9935..f2d6614 100644
--- a/ansys/api/additive/v0/additive_domain.proto
+++ b/ansys/api/additive/v0/additive_domain.proto
@@ -18,7 +18,7 @@ message MachineSettings {
     double slicing_stripe_width = 9;
     HeatSourceModelType heat_source_model = 10;
     RingModeIndex ring_mode_index = 11;
-    int32 defocus_index = 12;
+    double defocus_distance = 12;
 }
 
 message MeltPoolTimeStep {