diff --git a/conda/meta.yaml b/conda/meta.yaml
index e9203408c..6514215c4 100644
--- a/conda/meta.yaml
+++ b/conda/meta.yaml
@@ -1,5 +1,5 @@
 {% set OCCT_VER = "8.0.0" %}
-{% set OCP_TWEAK = "0" %}
+{% set OCP_TWEAK = "1" %}
 
 package:
   name: ocp
diff --git a/ocp.toml b/ocp.toml
index 55a26e7b5..dba47ad2b 100644
--- a/ocp.toml
+++ b/ocp.toml
@@ -1389,7 +1389,7 @@ class OpenGl_ShaderProgram;
 
 module_mapping = "lambda x: Path(x).splitpath()[-1].split('.')[0].split('_')[0]"
 
-byref_types = ["Standard_Real","Standard_Integer","Standard_Boolean","int","double","bool"]
+byref_types = ["Standard_Real","Standard_Integer","Standard_Boolean","int","double","bool","float"]
 byref_types_smart_ptr = ["opencascade::handle", "handle", "Handle"]
 
 parsing_header = '''#pragma clang diagnostic ignored "-Wmacro-redefined"
@@ -1449,7 +1449,7 @@ class Adaptor3d_Surface;
 
 [Attributes]
 
-    __version__ = "8.0.0.0"
+    __version__ = "8.0.0.1"
 
 [Modules]
 
diff --git a/tests/test_ocp.py b/tests/test_ocp.py
index 91b93a632..cdde05aa9 100644
--- a/tests/test_ocp.py
+++ b/tests/test_ocp.py
@@ -186,3 +186,21 @@ def test_bounds(surf):
     u2 == approx(2.0 * math.pi)
     v1 == approx(-0.5 * math.pi)
     v2 == approx(0.5 * math.pi)
+
+
+# %% attributes based on from OCP.XCAFDoc import XCAFDoc_VisMaterialPBR
+
+from OCP.XCAFDoc import XCAFDoc_VisMaterialPBR
+from OCP.Quantity import Quantity_ColorRGBA
+
+
+def test_attributes():
+
+    pbr = XCAFDoc_VisMaterialPBR()
+
+    assert isinstance(pbr.BaseColor, Quantity_ColorRGBA)
+    assert isinstance(pbr.Metallic, float)
+
+    assert pbr.Metallic == 1.0
+    pbr.Metallic = 0.0
+    assert pbr.Metallic == 0.0