diff --git a/Tests/DbLocalizationProvider.Storage.PostgreSql.Tests/DbLocalizationProvider.Storage.PostgreSql.Tests.csproj b/Tests/DbLocalizationProvider.Storage.PostgreSql.Tests/DbLocalizationProvider.Storage.PostgreSql.Tests.csproj
index 28343fd9..3efd2ea1 100644
--- a/Tests/DbLocalizationProvider.Storage.PostgreSql.Tests/DbLocalizationProvider.Storage.PostgreSql.Tests.csproj
+++ b/Tests/DbLocalizationProvider.Storage.PostgreSql.Tests/DbLocalizationProvider.Storage.PostgreSql.Tests.csproj
@@ -13,6 +13,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
+    <PackageReference Include="Testcontainers.PostgreSql" Version="3.9.0" />
     <PackageReference Include="xunit" Version="2.9.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
       <PrivateAssets>all</PrivateAssets>
@@ -21,7 +22,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\src\DbLocalizationProvider.Storage.PostgreSql\DbLocalizationProvider.Storage.PostgreSql.csproj" />
+    <ProjectReference Include="..\..\src\DbLocalizationProvider.Storage.PostgreSQL\DbLocalizationProvider.Storage.PostgreSql.csproj" />
   </ItemGroup>
 
 </Project>
diff --git a/Tests/DbLocalizationProvider.Storage.PostgreSql.Tests/ResourceRepositoryTests.cs b/Tests/DbLocalizationProvider.Storage.PostgreSql.Tests/ResourceRepositoryTests.cs
new file mode 100644
index 00000000..3388b743
--- /dev/null
+++ b/Tests/DbLocalizationProvider.Storage.PostgreSql.Tests/ResourceRepositoryTests.cs
@@ -0,0 +1,46 @@
+using System;
+using System.Threading.Tasks;
+using DbLocalizationProvider.Abstractions;
+using Microsoft.Extensions.Options;
+using Testcontainers.PostgreSql;
+using Xunit;
+
+namespace DbLocalizationProvider.Storage.PostgreSql.Tests;
+
+public class ResourceRepositoryTests : IAsyncLifetime
+{
+    private readonly PostgreSqlContainer _postgreSqlContainer = new PostgreSqlBuilder().Build();
+
+    public async Task InitializeAsync()
+    {
+        await _postgreSqlContainer.StartAsync();
+        Settings.DbContextConnectionString = _postgreSqlContainer.GetConnectionString();
+        new SchemaUpdater().Execute(null);
+    }
+
+    public Task DisposeAsync()
+    {
+        return _postgreSqlContainer.DisposeAsync().AsTask();
+    }
+
+    [Fact]
+    public void CanSaveNewResource()
+    {
+        var ctx = new ConfigurationContext();
+        var wrapper = new OptionsWrapper<ConfigurationContext>(ctx);
+        var repo = new ResourceRepository(wrapper);
+        var original = new LocalizationResource("testKey", false){
+            IsHidden = false,
+            FromCode = false,
+            IsModified = true,
+            Notes = "a test describtion",
+            Author = "test",
+            ModificationDate = DateTime.Now
+        };
+        repo.InsertResource(original);
+        var fromDB = repo.GetByKey(original.ResourceKey);
+        Assert.Equal(original.Notes, fromDB.Notes);
+    }
+
+
+}
diff --git a/src/DbLocalizationProvider.Storage.PostgreSQL/ResourceRepository.cs b/src/DbLocalizationProvider.Storage.PostgreSQL/ResourceRepository.cs
index baf6166a..e7c3d684 100644
--- a/src/DbLocalizationProvider.Storage.PostgreSQL/ResourceRepository.cs
+++ b/src/DbLocalizationProvider.Storage.PostgreSQL/ResourceRepository.cs
@@ -384,7 +384,7 @@ public void InsertResource(LocalizationResource resource)
             cmd.Parameters.AddSafeWithValue("notes", resource.Notes);
 
             // get inserted resource ID
-            var resourcePk = (int)cmd.ExecuteScalar();
+            var resourcePk = (long)cmd.ExecuteScalar();
 
             // if there are also provided translations - execute those in the same connection also
             if (resource.Translations.Any())