diff --git a/java/java.lsp.server/src/org/netbeans/modules/java/lsp/server/protocol/Server.java b/java/java.lsp.server/src/org/netbeans/modules/java/lsp/server/protocol/Server.java
index 652c8602fe70..f406c4759d0a 100644
--- a/java/java.lsp.server/src/org/netbeans/modules/java/lsp/server/protocol/Server.java
+++ b/java/java.lsp.server/src/org/netbeans/modules/java/lsp/server/protocol/Server.java
@@ -42,6 +42,7 @@
 import java.util.function.Function;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import com.google.gson.InstanceCreator;
 import org.eclipse.lsp4j.CodeActionKind;
 import org.eclipse.lsp4j.CodeActionOptions;
 import org.eclipse.lsp4j.CodeLensOptions;
@@ -55,6 +56,7 @@
 import org.eclipse.lsp4j.MessageType;
 import org.eclipse.lsp4j.PublishDiagnosticsParams;
 import org.eclipse.lsp4j.RenameOptions;
+import org.eclipse.lsp4j.SemanticTokensCapabilities;
 import org.eclipse.lsp4j.ServerCapabilities;
 import org.eclipse.lsp4j.ShowMessageRequestParams;
 import org.eclipse.lsp4j.TextDocumentSyncKind;
@@ -137,6 +139,7 @@ public static NbLspServer launchServer(Pair<InputStream, OutputStream> io, LspSe
     private static Launcher<NbCodeLanguageClient> createLauncher(LanguageServerImpl server, Pair<InputStream, OutputStream> io,
             Function<MessageConsumer, MessageConsumer> processor) {
         return new LSPLauncher.Builder<NbCodeLanguageClient>()
+            .configureGson(gb -> gb.registerTypeAdapter(SemanticTokensCapabilities.class, (InstanceCreator<SemanticTokensCapabilities>) type -> new SemanticTokensCapabilities(false)))
             .setLocalService(server)
             .setRemoteInterface(NbCodeLanguageClient.class)
             .setInput(io.first())