diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 733950d..c08439b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
     name: Build python package
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Setup Python
         uses: actions/setup-python@v4
         with:
@@ -46,9 +46,9 @@ jobs:
           python -c "from ${{ env.PACKAGE_NAME }} import __version__; print(__version__)"
 
       - name: Upload packages
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
-          name: ansys-api-additive-packages
+          name: ansys-api-additive-packages-python
           path: dist/
           retention-days: 7
 
@@ -56,7 +56,7 @@ jobs:
     name: Build nuget package
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Setup dotnet
         uses: actions/setup-dotnet@v3
@@ -71,9 +71,9 @@ jobs:
           rm -rf nuget_package
           dotnet pack csharp/Ansys.Api.Additive.csproj -c Release -o nuget_package -p:Version=${version}
       - name: Upload package artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
-          name: ansys-api-additive-packages
+          name: ansys-api-additive-packages-nuget
           path: nuget_package/
           retention-days: 7
 
@@ -87,7 +87,7 @@ jobs:
         with:
           python-version: ${{ env.MAIN_PYTHON_VERSION }}
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
 
       - name: Display structure of downloaded files
         run: ls -R
@@ -121,7 +121,7 @@ jobs:
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
 
       - name: Display structure of downloaded files
         run: ls -R
diff --git a/ansys/api/additive/VERSION b/ansys/api/additive/VERSION
index 058d1bb..f629fe4 100644
--- a/ansys/api/additive/VERSION
+++ b/ansys/api/additive/VERSION
@@ -1 +1 @@
-5.0.2-dev0
+5.0.3-dev0
diff --git a/ansys/api/additive/v0/additive_domain.proto b/ansys/api/additive/v0/additive_domain.proto
index dfb3226..0dcaa18 100644
--- a/ansys/api/additive/v0/additive_domain.proto
+++ b/ansys/api/additive/v0/additive_domain.proto
@@ -70,6 +70,8 @@ message AdditiveMaterial {
     repeated ThermalPropertiesDataPoint thermal_properties_data_points = 35;
     repeated CharacteristicWidthDataPoint characteristic_width_data_points = 36;
     string description = 37;
+    double cooling_rate_sim_coeff_a = 38;
+    double cooling_rate_sim_coeff_b = 39;
 }
 
 message CharacteristicWidthDataPoint {