diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2a0bf267a..7a91ce699 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,6 +19,6 @@ jobs:
         uses: actions/setup-java@v4
         with:
           java-version: '11'
-          distribution: 'adopt'
+          distribution: 'temurin'
       - name: Run test suite
         run: mvn --batch-mode --activate-profiles ${{ matrix.profile }} --define release.signing.disabled=true clean verify
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 05dbe5d3c..057ecdb0b 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -14,7 +14,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           java-version: '11'
-          distribution: 'adopt'
+          distribution: 'temurin'
           server-id: ossrh
           server-username: OSSRH_USERNAME
           server-password: OSSRH_TOKEN
diff --git a/protege-editor-owl/src/main/java/org/protege/editor/owl/model/hierarchy/ClassHierarchyPreferences.java b/protege-editor-owl/src/main/java/org/protege/editor/owl/model/hierarchy/ClassHierarchyPreferences.java
index c672e5ee6..adf4e5f4a 100644
--- a/protege-editor-owl/src/main/java/org/protege/editor/owl/model/hierarchy/ClassHierarchyPreferences.java
+++ b/protege-editor-owl/src/main/java/org/protege/editor/owl/model/hierarchy/ClassHierarchyPreferences.java
@@ -16,6 +16,8 @@ public class ClassHierarchyPreferences {
 
     private static final String DISPLAY_RELATIONSHIPS_KEY = "DISPLAY_RELATIONSHIPS";
 
+    private static final String DISPLAY_DEPRECATED_ENTITIES_KEY = "DISPLAY_DEPRECATED_ENTITIES";
+
     private static Preferences getPreferences() {
         return PreferencesManager.getInstance().getApplicationPreferences(CLASS_HIERARCHY_PREFERENCES);
     }
@@ -31,4 +33,12 @@ public boolean isDisplayRelationships() {
     public void setDisplayRelationships(boolean displayRelationships) {
         getPreferences().putBoolean(DISPLAY_RELATIONSHIPS_KEY, displayRelationships);
     }
+
+    public boolean isDisplayDeprecatedEntities() {
+        return getPreferences().getBoolean(DISPLAY_DEPRECATED_ENTITIES_KEY, false);
+    }
+
+    public void setDisplayDeprecatedEntities(boolean displayDeprecatedEntities) {
+        getPreferences().putBoolean(DISPLAY_DEPRECATED_ENTITIES_KEY, displayDeprecatedEntities);
+    }
 }
diff --git a/protege-editor-owl/src/main/java/org/protege/editor/owl/model/identifiers/IdentifiersDotOrg.java b/protege-editor-owl/src/main/java/org/protege/editor/owl/model/identifiers/IdentifiersDotOrg.java
index 43b9ce497..9a9e3db9e 100644
--- a/protege-editor-owl/src/main/java/org/protege/editor/owl/model/identifiers/IdentifiersDotOrg.java
+++ b/protege-editor-owl/src/main/java/org/protege/editor/owl/model/identifiers/IdentifiersDotOrg.java
@@ -140,8 +140,6 @@ public List<IdoNamespace> getCollections() {
 
     @Nonnull
     private static HttpClient createClient() {
-        return HttpClientBuilder.create().build();
-
-
+        return HttpClientBuilder.create().useSystemProperties().build();
     }
 }
diff --git a/protege-editor-owl/src/main/java/org/protege/editor/owl/ui/action/DisplayDeprecatedEntitiesAction.java b/protege-editor-owl/src/main/java/org/protege/editor/owl/ui/action/DisplayDeprecatedEntitiesAction.java
index 9a27e4524..ece6fc282 100644
--- a/protege-editor-owl/src/main/java/org/protege/editor/owl/ui/action/DisplayDeprecatedEntitiesAction.java
+++ b/protege-editor-owl/src/main/java/org/protege/editor/owl/ui/action/DisplayDeprecatedEntitiesAction.java
@@ -1,5 +1,6 @@
 package org.protege.editor.owl.ui.action;
 
+import org.protege.editor.owl.model.hierarchy.ClassHierarchyPreferences;
 import org.protege.editor.owl.ui.view.HasDisplayDeprecatedEntities;
 
 import java.awt.event.ActionEvent;
@@ -13,7 +14,7 @@ public class DisplayDeprecatedEntitiesAction extends ComponentHierarchyAction<Ha
 
     @Override
     protected Class<HasDisplayDeprecatedEntities> initialiseAction() {
-        putValue(SELECTED_KEY, false);
+        putValue(SELECTED_KEY, ClassHierarchyPreferences.get().isDisplayDeprecatedEntities());
         return HasDisplayDeprecatedEntities.class;
     }
 
@@ -21,5 +22,6 @@ protected Class<HasDisplayDeprecatedEntities> initialiseAction() {
     protected void actionPerformedOnTarget(ActionEvent e, HasDisplayDeprecatedEntities target) {
         boolean value = (boolean) getValue(SELECTED_KEY);
         target.setShowDeprecatedEntities(value);
+        ClassHierarchyPreferences.get().setDisplayDeprecatedEntities(value);
     }
 }
diff --git a/protege-editor-owl/src/main/java/org/protege/editor/owl/ui/view/AbstractOWLEntityHierarchyViewComponent.java b/protege-editor-owl/src/main/java/org/protege/editor/owl/ui/view/AbstractOWLEntityHierarchyViewComponent.java
index feeb90d07..f3609b11d 100644
--- a/protege-editor-owl/src/main/java/org/protege/editor/owl/ui/view/AbstractOWLEntityHierarchyViewComponent.java
+++ b/protege-editor-owl/src/main/java/org/protege/editor/owl/ui/view/AbstractOWLEntityHierarchyViewComponent.java
@@ -6,6 +6,7 @@
 import org.protege.editor.core.ui.view.ViewMode;
 import org.protege.editor.core.util.HandlerRegistration;
 import org.protege.editor.owl.model.OWLModelManager;
+import org.protege.editor.owl.model.hierarchy.ClassHierarchyPreferences;
 import org.protege.editor.owl.model.hierarchy.OWLObjectHierarchyProvider;
 import org.protege.editor.owl.ui.OWLObjectComparatorAdapter;
 import org.protege.editor.owl.ui.action.AbstractOWLTreeAction;
@@ -170,8 +171,9 @@ public void mouseReleased(MouseEvent e) {
 
         breadCrumbTrailProviderRegistration = getOWLWorkspace().registerBreadcrumbTrailProvider(this);
 
-        // Don't show deprecated entities by default
-        getHierarchyProvider().setFilter(this::isNotDeprecated);
+        if (!ClassHierarchyPreferences.get().isDisplayDeprecatedEntities()) {
+             getHierarchyProvider().setFilter(this::isNotDeprecated);
+        }
     }
 
     private void scrollSelectedPathToVisibleRect() {