diff --git a/AsbCloudInfrastructure/Services/Cache/CacheTable.cs b/AsbCloudInfrastructure/Services/Cache/CacheTable.cs
index a0c37248..1856acd5 100644
--- a/AsbCloudInfrastructure/Services/Cache/CacheTable.cs
+++ b/AsbCloudInfrastructure/Services/Cache/CacheTable.cs
@@ -206,7 +206,11 @@ namespace AsbCloudInfrastructure.Services.Cache
         public async Task<TEntity> UpsertAsync(TEntity entity, CancellationToken token = default)
         {
             var dbSet = context.Set<TEntity>();
-            var updated = dbSet.Update(entity);
+            Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry<TEntity> updated;
+            if (dbSet.Contains(entity))
+                updated = dbSet.Update(entity);
+            else
+                updated = dbSet.Add(entity);
             await context.SaveChangesAsync(token).ConfigureAwait(false);
             await RefreshAsync(token).ConfigureAwait(false);
             return updated.Entity;
@@ -217,7 +221,14 @@ namespace AsbCloudInfrastructure.Services.Cache
             var dbSet = context.Set<TEntity>();
             var upsertedEntries = new List<TEntity>(entities.Count());
             foreach (var entity in entities)
-                upsertedEntries.Add(dbSet.Update(entity).Entity);            
+            {
+                Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry<TEntity> updated;
+                if (dbSet.Contains(entity))
+                    updated = dbSet.Update(entity);
+                else
+                    updated = dbSet.Add(entity);
+                upsertedEntries.Add(updated.Entity);
+            }    
             context.SaveChanges();
             Refresh();
             return upsertedEntries;
@@ -228,7 +239,14 @@ namespace AsbCloudInfrastructure.Services.Cache
             var dbSet = context.Set<TEntity>();
             var upsertedEntries = new List<TEntity>(entities.Count());
             foreach (var entity in entities)
-                upsertedEntries.Add(dbSet.Update(entity).Entity);
+            {
+                Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry<TEntity> updated;
+                if (dbSet.Contains(entity))
+                    updated = dbSet.Update(entity);
+                else
+                    updated = dbSet.Add(entity);
+                upsertedEntries.Add(updated.Entity);
+            }
             await context.SaveChangesAsync(token).ConfigureAwait(false);
             await RefreshAsync(token).ConfigureAwait(false);
             return upsertedEntries;