diff --git a/gradle/any/shared-mvn-coords.gradle b/gradle/any/shared-mvn-coords.gradle
index 68c806628b..5a0282fb7d 100644
--- a/gradle/any/shared-mvn-coords.gradle
+++ b/gradle/any/shared-mvn-coords.gradle
@@ -18,7 +18,7 @@ ext {
   // best we can do is define the version here, which can then be applied in all of the places we need the full maven
   // coords.
   depVersion = [:]
-  depVersion.slf4j = '1.7.28'
+  depVersion.slf4j = '2.0.17'
   depVersion.protobuf = '3.25.5'
   depVersion.grpc = '1.60.0'
 }
diff --git a/netcdf-java-platform/build.gradle b/netcdf-java-platform/build.gradle
index cc61749ee3..6ec42da83a 100644
--- a/netcdf-java-platform/build.gradle
+++ b/netcdf-java-platform/build.gradle
@@ -76,7 +76,7 @@ dependencies {
 
     // netcdf-java logging
     api "org.slf4j:slf4j-api:${depVersion.slf4j}"
-    runtime 'ch.qos.logback:logback-classic:1.5.14'
+    runtime 'ch.qos.logback:logback-classic:1.3.15'
 
     // legacy gradle module
     // todo: remove with legacy in 6
diff --git a/uicdm/build.gradle b/uicdm/build.gradle
index 3b4dacbc0a..a089553640 100644
--- a/uicdm/build.gradle
+++ b/uicdm/build.gradle
@@ -40,6 +40,7 @@ dependencies {
   testImplementation 'junit:junit'
 
   runtimeOnly project(':cdm:cdm-s3')
+  runtimeOnly project(':cdm:cdm-zarr')
 
   // constrained by netcdf-java-platform
   runtimeOnly 'ch.qos.logback:logback-classic'
diff --git a/uicdm/src/main/java/ucar/nc2/ui/coverage2/CoverageTable.java b/uicdm/src/main/java/ucar/nc2/ui/coverage2/CoverageTable.java
index 3eb8f6d5cf..5d748826c0 100644
--- a/uicdm/src/main/java/ucar/nc2/ui/coverage2/CoverageTable.java
+++ b/uicdm/src/main/java/ucar/nc2/ui/coverage2/CoverageTable.java
@@ -12,8 +12,7 @@
 import ucar.nc2.ft2.coverage.*;
 import ucar.ui.widget.*;
 import ucar.ui.widget.PopupMenu;
-import ucar.nc2.util.Misc;
-import ucar.nc2.util.NamedObject;
+import ucar.util.NamedObject;
 import ucar.util.prefs.PreferencesExt;
 import ucar.ui.prefs.BeanTable;
 import javax.swing.*;
diff --git a/uicdm/src/main/java/ucar/nc2/ui/dialog/NetcdfOutputChooser.java b/uicdm/src/main/java/ucar/nc2/ui/dialog/NetcdfOutputChooser.java
index 29cc59e9ab..ca30e2dbf3 100644
--- a/uicdm/src/main/java/ucar/nc2/ui/dialog/NetcdfOutputChooser.java
+++ b/uicdm/src/main/java/ucar/nc2/ui/dialog/NetcdfOutputChooser.java
@@ -1,10 +1,13 @@
 /*
+ * Copyright (c) 1998-2025 John Caron and University Corporation for Atmospheric Research/Unidata
+ * See LICENSE for license information.
+ *
  * Created by JFormDesigner on Thu Nov 15 14:02:02 MST 2012
  */
 
 package ucar.nc2.ui.dialog;
 
-import ucar.nc2.NetcdfFileWriter;
+import java.util.Arrays;
 import ucar.nc2.util.ListenerManager;
 import ucar.nc2.write.Nc4Chunking;
 import javax.swing.*;
@@ -44,8 +47,8 @@ public void setOutputFilename(String filename) {
       location = location.substring(0, pos);
 
     // change suffix
-    NetcdfFileWriter.Version version = (NetcdfFileWriter.Version) netcdfVersion.getSelectedItem();
-    String suffix = (version == null) ? ".nc" : version.getSuffix();
+    NetcdfFileFormat version = (NetcdfFileFormat) netcdfVersion.getSelectedItem();
+    String suffix = (version != null && version.isNetcdf4Format()) ? ".nc4" : ".nc";
     if (filename.endsWith(".nc") && suffix.equals(".nc"))
       suffix = ".sub.nc";
     location += suffix;
@@ -105,10 +108,11 @@ private void initComponents() {
     label1 = new JLabel();
     outputFilename = new JTextField();
     label2 = new JLabel();
-    netcdfVersion = new JComboBox(NetcdfFileWriter.Version.values());
+    netcdfVersion = new JComboBox<>(
+        Arrays.stream(NetcdfFileFormat.values()).filter(format -> format != NetcdfFileFormat.INVALID).toArray());
     panel1 = new JPanel();
     label3 = new JLabel();
-    chunking = new JComboBox(Nc4Chunking.Strategy.values());
+    chunking = new JComboBox<>(Nc4Chunking.Strategy.values());
     deflate = new JCheckBox();
     shuffle = new JCheckBox();
     buttonBar = new JPanel();