diff --git a/visualizer/IdealGraphVisualizer/Data/src/main/nbm/manifest.mf b/visualizer/IdealGraphVisualizer/Data/src/main/nbm/manifest.mf
index ba76fd7779dc..c7db6e6079ef 100644
--- a/visualizer/IdealGraphVisualizer/Data/src/main/nbm/manifest.mf
+++ b/visualizer/IdealGraphVisualizer/Data/src/main/nbm/manifest.mf
@@ -2,4 +2,4 @@ Manifest-Version: 1.0
 OpenIDE-Module: org.graalvm.visualizer.data
 OpenIDE-Module-Localizing-Bundle: org/graalvm/visualizer/data/Bundle.properties
 OpenIDE-Module-Specification-Version: 1.5
-
+OpenIDE-Module-Hide-Classpath-Packages: jdk.graal.compiler.graphio.**
diff --git a/visualizer/IdealGraphVisualizer/pom.xml b/visualizer/IdealGraphVisualizer/pom.xml
index e5a8e1be6e7f..90f8c51178ee 100644
--- a/visualizer/IdealGraphVisualizer/pom.xml
+++ b/visualizer/IdealGraphVisualizer/pom.xml
@@ -117,7 +117,7 @@
         <module>ViewerApi</module>
     </modules>
     <properties>
-        <netbeans.version>RELEASE220</netbeans.version>
+        <netbeans.version>RELEASE260</netbeans.version>
         <brandingToken>idealgraphvisualizer</brandingToken>
         <swinglayouts.version>1.0.2</swinglayouts.version>
         <nbmmvnplugin.version>4.8</nbmmvnplugin.version>