diff --git a/README.md b/README.md
index 083e652..d47f4cb 100644
--- a/README.md
+++ b/README.md
@@ -566,6 +566,8 @@ Press F5 to start debugging.
 
 ## History
 
+2024-10-23: release 2.18.1 add null checking in attribute columns
+
 2024-10-15: release 2.18.0 add option tilesetVersion
 
 2024-09-04: release 2.17.0:
diff --git a/src/pg2b3dm/pg2b3dm.csproj b/src/pg2b3dm/pg2b3dm.csproj
index b35bd25..644789e 100644
--- a/src/pg2b3dm/pg2b3dm.csproj
+++ b/src/pg2b3dm/pg2b3dm.csproj
@@ -6,10 +6,10 @@
 	<PackageOutputPath>./nupkg</PackageOutputPath>
 	<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 	<ToolCommandName>pg2b3dm</ToolCommandName>
-	<Version>2.18.0</Version>
+	<Version>2.18.1</Version>
     <Description>Console tool for converting PostGIS geometries to 3D Tiles</Description>
-    <AssemblyVersion>2.18.0</AssemblyVersion>
-    <FileVersion>2.18.0</FileVersion>
+    <AssemblyVersion>2.18.1</AssemblyVersion>
+    <FileVersion>2.18.1</FileVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <Company>Geodan</Company>
@@ -17,7 +17,7 @@
     <PackageProjectUrl>https://github.com/geodan/pg2b3dm</PackageProjectUrl>
     <RepositoryUrl>https://github.com/geodan/pg2b3dm</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
-    <PackageReleaseNotes>Add option tilesetVersion</PackageReleaseNotes>
+    <PackageReleaseNotes>Add null checking for attributes</PackageReleaseNotes>
     <PackageTags>3dtiles b3dm gltf cesium</PackageTags>
 	<ErrorOnDuplicatePublishOutputFiles>false</ErrorOnDuplicatePublishOutputFiles>
   </PropertyGroup>