diff --git a/Maple2.File.Parser/ItemOptionParser.cs b/Maple2.File.Parser/ItemOptionParser.cs
index 681fbdd..2a63cef 100644
--- a/Maple2.File.Parser/ItemOptionParser.cs
+++ b/Maple2.File.Parser/ItemOptionParser.cs
@@ -19,6 +19,7 @@ public class ItemOptionParser {
         "gemstone",
         "mergematerial",
         "skin",
+        "kms2merge", // custom
     ];
     private readonly string[] randomSuffix = [
         "12",
diff --git a/Maple2.File.Parser/Maple2.File.Parser.csproj b/Maple2.File.Parser/Maple2.File.Parser.csproj
index b9dd719..1da29fa 100644
--- a/Maple2.File.Parser/Maple2.File.Parser.csproj
+++ b/Maple2.File.Parser/Maple2.File.Parser.csproj
@@ -13,7 +13,7 @@
         <PackageTags>MapleStory2, File, Parser, m2d, xml</PackageTags>
         <!-- Use following lines to write the generated files to disk. -->
         <EmitCompilerGeneratedFiles Condition=" '$(Configuration)' == 'Debug' ">true</EmitCompilerGeneratedFiles>
-        <PackageVersion>2.4.18</PackageVersion>
+        <PackageVersion>2.4.19</PackageVersion>
         <TargetFramework>net8.0</TargetFramework>
         <PackageReadmeFile>README.md</PackageReadmeFile>
         <ImplicitUsings>enable</ImplicitUsings>