diff --git a/src/designer/elsa-workflows-designer/src/modules/workflow-definitions/plugins/composite-version-plugin.tsx b/src/designer/elsa-workflows-designer/src/modules/workflow-definitions/plugins/composite-version-plugin.tsx
index 9c4683af5..ac7b07fdd 100644
--- a/src/designer/elsa-workflows-designer/src/modules/workflow-definitions/plugins/composite-version-plugin.tsx
+++ b/src/designer/elsa-workflows-designer/src/modules/workflow-definitions/plugins/composite-version-plugin.tsx
@@ -1,8 +1,8 @@
 import {h} from '@stencil/core';
 import {Container, Service} from "typedi";
 import {Plugin, TabDefinition} from "../../../models";
-import {EventBus, flatten, walkActivities} from "../../../services";
-import {ActivityPropertyPanelEvents, WorkflowEditorEventTypes} from "../models/ui";
+import {EventBus} from "../../../services";
+import {ActivityPropertyPanelEvents} from "../models/ui";
 import {RenderActivityPropsContext, WorkflowDefinitionActivity} from "../components/models";
 import {WorkflowDefinitionsApi} from "../services/api";
 
diff --git a/src/modules/Elsa.Workflows.Management/Providers/WorkflowDefinitionActivityProvider.cs b/src/modules/Elsa.Workflows.Management/Providers/WorkflowDefinitionActivityProvider.cs
index 74c12684c..6eec516db 100644
--- a/src/modules/Elsa.Workflows.Management/Providers/WorkflowDefinitionActivityProvider.cs
+++ b/src/modules/Elsa.Workflows.Management/Providers/WorkflowDefinitionActivityProvider.cs
@@ -28,7 +28,7 @@ public class WorkflowDefinitionActivityProvider : IActivityProvider
     public async ValueTask<IEnumerable<ActivityDescriptor>> GetDescriptorsAsync(CancellationToken cancellationToken = default)
     {
         var definitions = (await _store.FindWithActivityBehaviorAsync(VersionOptions.All, cancellationToken)).ToList();
-        var latestPublishedVersion = definitions.Where(x => x.IsPublished).Select(x => x.Version).Max();
+        var latestPublishedVersion = definitions.Where(x => x.IsPublished).Select(x => x.Version).OrderByDescending(x => x).FirstOrDefault();
         var descriptors = CreateDescriptors(definitions, latestPublishedVersion);
         return descriptors;
     }