diff --git a/src/RdbmsEventStore.EntityFramework.Tests/ExtensibilityTests/NonDefaultImplementationsTests.cs b/src/RdbmsEventStore.EntityFramework.Tests/ExtensibilityTests/NonDefaultImplementationsTests.cs
index 9016cc8..686c097 100644
--- a/src/RdbmsEventStore.EntityFramework.Tests/ExtensibilityTests/NonDefaultImplementationsTests.cs
+++ b/src/RdbmsEventStore.EntityFramework.Tests/ExtensibilityTests/NonDefaultImplementationsTests.cs
@@ -2,7 +2,6 @@
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 using System.Data.Entity;
-using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using RdbmsEventStore.EntityFramework.Tests.Infrastructure;
@@ -84,7 +83,7 @@ public async Task CanReadEventsFromStoreWithNonDefaultImplementations()
 
             var events = await store.Events(1);
 
-            Assert.Equal(1, events.Count());
+            Assert.Single(events);
         }
         public void Dispose()
         {
diff --git a/src/RdbmsEventStore.EntityFramework.Tests/Infrastructure/AssemblyInitializerFixture.cs b/src/RdbmsEventStore.EntityFramework.Tests/Infrastructure/AssemblyInitializerFixture.cs
index 9097215..4de5167 100644
--- a/src/RdbmsEventStore.EntityFramework.Tests/Infrastructure/AssemblyInitializerFixture.cs
+++ b/src/RdbmsEventStore.EntityFramework.Tests/Infrastructure/AssemblyInitializerFixture.cs
@@ -10,6 +10,6 @@ public AssemblyInitializerFixture()
         }
     }
 
-    [CollectionDefinition(nameof(InMemoryDatabaseCollection))]
+    [CollectionDefinition(nameof(InMemoryDatabaseCollection), DisableParallelization = true)]
     public class InMemoryDatabaseCollection : ICollectionFixture<AssemblyInitializerFixture> { }
 }
\ No newline at end of file
diff --git a/src/RdbmsEventStore.EntityFramework.Tests/RdbmsEventStore.EntityFramework.Tests.csproj b/src/RdbmsEventStore.EntityFramework.Tests/RdbmsEventStore.EntityFramework.Tests.csproj
index 4b6395c..bb61e91 100644
--- a/src/RdbmsEventStore.EntityFramework.Tests/RdbmsEventStore.EntityFramework.Tests.csproj
+++ b/src/RdbmsEventStore.EntityFramework.Tests/RdbmsEventStore.EntityFramework.Tests.csproj
@@ -10,8 +10,8 @@
   <ItemGroup>
     <PackageReference Include="Effort.EF6" Version="1.3.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.3.0" />
-    <PackageReference Include="xunit" Version="2.2.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0" />
+    <PackageReference Include="xunit" Version="2.3.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/RdbmsEventStore.Tests/RdbmsEventStore.Tests.csproj b/src/RdbmsEventStore.Tests/RdbmsEventStore.Tests.csproj
index e133c53..9a36ce7 100644
--- a/src/RdbmsEventStore.Tests/RdbmsEventStore.Tests.csproj
+++ b/src/RdbmsEventStore.Tests/RdbmsEventStore.Tests.csproj
@@ -8,9 +8,9 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.3.0" />
-    <PackageReference Include="Moq" Version="4.7.137" />
-    <PackageReference Include="xunit" Version="2.2.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0" />
+    <PackageReference Include="Moq" Version="4.7.142" />
+    <PackageReference Include="xunit" Version="2.3.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/RdbmsEventStore/RdbmsEventStore.csproj b/src/RdbmsEventStore/RdbmsEventStore.csproj
index b4abd27..f3e5deb 100644
--- a/src/RdbmsEventStore/RdbmsEventStore.csproj
+++ b/src/RdbmsEventStore/RdbmsEventStore.csproj
@@ -20,7 +20,6 @@
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
     <PackageReference Include="Nito.AsyncEx.Coordination" Version="1.0.2" />
-    <PackageReference Include="System.ValueTuple" Version="4.4.0" />
   </ItemGroup>
 
 </Project>