diff --git a/src/ansys/api/acp/VERSION b/src/ansys/api/acp/VERSION
index 9e557de..604a1e7 100644
--- a/src/ansys/api/acp/VERSION
+++ b/src/ansys/api/acp/VERSION
@@ -1 +1 @@
-0.1.0.dev4
+0.1.0.dev5
diff --git a/src/ansys/api/acp/v0/model.proto b/src/ansys/api/acp/v0/model.proto
index 557fc98..44dea7d 100644
--- a/src/ansys/api/acp/v0/model.proto
+++ b/src/ansys/api/acp/v0/model.proto
@@ -19,6 +19,7 @@ message Properties {
     double minimum_analysis_ply_thickness = 6;
     // read only property
     unit_system.UnitSystemType unit_system = 7;
+    double average_element_size = 8;
 }
 
 message ObjectInfo {