diff --git a/src/adapter3/neodebug-3-adapter.csproj b/src/adapter3/neodebug-3-adapter.csproj
index cfc3b9e7..2054d508 100644
--- a/src/adapter3/neodebug-3-adapter.csproj
+++ b/src/adapter3/neodebug-3-adapter.csproj
@@ -22,7 +22,7 @@
   </ItemGroup>
 
   <PropertyGroup>
-    <BlockchainToolkitLibraryVersion>3.1.21</BlockchainToolkitLibraryVersion>
+    <BlockchainToolkitLibraryVersion>3.1.27</BlockchainToolkitLibraryVersion>
     <BlockchainToolkitLibraryLocalPath>..\..\..\lib-bctk</BlockchainToolkitLibraryLocalPath>
     <!-- <BlockchainToolkitLibraryVersion>local</BlockchainToolkitLibraryVersion> -->
   </PropertyGroup>