diff --git a/ansys/api/additive/VERSION b/ansys/api/additive/VERSION
index b38f36d..a6a6927 100644
--- a/ansys/api/additive/VERSION
+++ b/ansys/api/additive/VERSION
@@ -1 +1 @@
-1.7.0-dev5
\ No newline at end of file
+1.7.0-dev6
\ No newline at end of file
diff --git a/ansys/api/additive/v0/additive_materials.proto b/ansys/api/additive/v0/additive_materials.proto
index b5d42a1..45f3569 100644
--- a/ansys/api/additive/v0/additive_materials.proto
+++ b/ansys/api/additive/v0/additive_materials.proto
@@ -12,6 +12,8 @@ service MaterialsService {
 
     rpc AddMaterial(AddMaterialRequest) returns (AddMaterialResponse);
 
+    rpc RemoveMaterial(RemoveMaterialRequest) returns (google.protobuf.Empty);
+
     rpc GetMaterialsList (google.protobuf.Empty) returns (GetMaterialsListResponse);
 
     rpc GetMaterial (GetMaterialRequest) returns (AdditiveMaterial);
@@ -32,6 +34,10 @@ message AddMaterialResponse {
     }
 }
 
+message RemoveMaterialRequest {
+    string name = 1;
+}
+
 message GetMaterialRequest {
     string name = 1;
 }