diff --git a/src/NServiceBus.NHibernate.AcceptanceTests.Oracle/NServiceBus.NHibernate.AcceptanceTests.Oracle.csproj b/src/NServiceBus.NHibernate.AcceptanceTests.Oracle/NServiceBus.NHibernate.AcceptanceTests.Oracle.csproj
index 1462bed9..7e5acb8b 100644
--- a/src/NServiceBus.NHibernate.AcceptanceTests.Oracle/NServiceBus.NHibernate.AcceptanceTests.Oracle.csproj
+++ b/src/NServiceBus.NHibernate.AcceptanceTests.Oracle/NServiceBus.NHibernate.AcceptanceTests.Oracle.csproj
@@ -13,7 +13,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageReference Include="NHibernate" Version="5.4.6" />
     <PackageReference Include="NServiceBus.AcceptanceTests.Sources" Version="9.0.0-alpha.9" GeneratePathProperty="true" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.0.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageReference Include="Oracle.ManagedDataAccess.Core" Version="3.21.120" />
   </ItemGroup>
diff --git a/src/NServiceBus.NHibernate.AcceptanceTests.SqlTransport/NServiceBus.NHibernate.AcceptanceTests.SqlTransport.csproj b/src/NServiceBus.NHibernate.AcceptanceTests.SqlTransport/NServiceBus.NHibernate.AcceptanceTests.SqlTransport.csproj
index b5a82a8c..9486c76a 100644
--- a/src/NServiceBus.NHibernate.AcceptanceTests.SqlTransport/NServiceBus.NHibernate.AcceptanceTests.SqlTransport.csproj
+++ b/src/NServiceBus.NHibernate.AcceptanceTests.SqlTransport/NServiceBus.NHibernate.AcceptanceTests.SqlTransport.csproj
@@ -14,7 +14,7 @@
     <PackageReference Include="NHibernate" Version="5.4.6" />
     <PackageReference Include="NServiceBus.AcceptanceTests.Sources" Version="9.0.0-alpha.9" GeneratePathProperty="true" />
     <PackageReference Include="NServiceBus.Transport.SqlServer" Version="8.0.0-alpha.1" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.0.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
   </ItemGroup>
 
diff --git a/src/NServiceBus.NHibernate.AcceptanceTests/NServiceBus.NHibernate.AcceptanceTests.csproj b/src/NServiceBus.NHibernate.AcceptanceTests/NServiceBus.NHibernate.AcceptanceTests.csproj
index ac74eb71..ab15bd39 100644
--- a/src/NServiceBus.NHibernate.AcceptanceTests/NServiceBus.NHibernate.AcceptanceTests.csproj
+++ b/src/NServiceBus.NHibernate.AcceptanceTests/NServiceBus.NHibernate.AcceptanceTests.csproj
@@ -14,7 +14,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageReference Include="NHibernate" Version="5.4.6" />
     <PackageReference Include="NServiceBus.AcceptanceTests.Sources" Version="9.0.0-alpha.9" GeneratePathProperty="true" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.0.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
   </ItemGroup>
 
diff --git a/src/NServiceBus.NHibernate.PersistenceTests/NServiceBus.NHibernate.PersistenceTests.csproj b/src/NServiceBus.NHibernate.PersistenceTests/NServiceBus.NHibernate.PersistenceTests.csproj
index ccaee460..79783539 100644
--- a/src/NServiceBus.NHibernate.PersistenceTests/NServiceBus.NHibernate.PersistenceTests.csproj
+++ b/src/NServiceBus.NHibernate.PersistenceTests/NServiceBus.NHibernate.PersistenceTests.csproj
@@ -16,7 +16,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageReference Include="NHibernate" Version="5.4.6" />
     <PackageReference Include="NServiceBus.PersistenceTests.Sources" Version="9.0.0-alpha.9" GeneratePathProperty="true" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.0.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageReference Include="Oracle.ManagedDataAccess.Core" Version="3.21.120" />
   </ItemGroup>
diff --git a/src/NServiceBus.NHibernate.Tests/NServiceBus.NHibernate.Tests.csproj b/src/NServiceBus.NHibernate.Tests/NServiceBus.NHibernate.Tests.csproj
index 3ce5dc80..884e5e57 100644
--- a/src/NServiceBus.NHibernate.Tests/NServiceBus.NHibernate.Tests.csproj
+++ b/src/NServiceBus.NHibernate.Tests/NServiceBus.NHibernate.Tests.csproj
@@ -17,7 +17,7 @@
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="NHibernate" Version="5.4.6" />
     <PackageReference Include="NServiceBus" Version="9.0.0-alpha.9" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.0.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageReference Include="Particular.Approvals" Version="0.6.0" />
     <PackageReference Include="PublicApiGenerator" Version="11.0.0" />
diff --git a/src/NServiceBus.NHibernate.TransactionalSession.AcceptanceTests/NServiceBus.NHibernate.TransactionalSession.AcceptanceTests.csproj b/src/NServiceBus.NHibernate.TransactionalSession.AcceptanceTests/NServiceBus.NHibernate.TransactionalSession.AcceptanceTests.csproj
index 5d2abf09..67bb59cd 100644
--- a/src/NServiceBus.NHibernate.TransactionalSession.AcceptanceTests/NServiceBus.NHibernate.TransactionalSession.AcceptanceTests.csproj
+++ b/src/NServiceBus.NHibernate.TransactionalSession.AcceptanceTests/NServiceBus.NHibernate.TransactionalSession.AcceptanceTests.csproj
@@ -19,7 +19,7 @@
     <PackageReference Include="NHibernate" Version="5.4.6" />
     <PackageReference Include="NServiceBus.AcceptanceTesting" Version="9.0.0-alpha.9" />
     <PackageReference Include="NServiceBus.TransactionalSession" Version="3.0.0-alpha.1" />
-    <PackageReference Include="Nunit" Version="3.14.0" />
+    <PackageReference Include="Nunit" Version="4.0.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
   </ItemGroup>
 
diff --git a/src/NServiceBus.NHibernate.TransactionalSession.Tests/NServiceBus.NHibernate.TransactionalSession.Tests.csproj b/src/NServiceBus.NHibernate.TransactionalSession.Tests/NServiceBus.NHibernate.TransactionalSession.Tests.csproj
index c3c6bdbf..0fc0ddad 100644
--- a/src/NServiceBus.NHibernate.TransactionalSession.Tests/NServiceBus.NHibernate.TransactionalSession.Tests.csproj
+++ b/src/NServiceBus.NHibernate.TransactionalSession.Tests/NServiceBus.NHibernate.TransactionalSession.Tests.csproj
@@ -18,7 +18,7 @@
     <PackageReference Include="NHibernate" Version="5.4.6" />
     <PackageReference Include="NServiceBus" Version="9.0.0-alpha.9" />
     <PackageReference Include="NServiceBus.TransactionalSession" Version="3.0.0-alpha.1" />
-    <PackageReference Include="Nunit" Version="3.14.0" />
+    <PackageReference Include="Nunit" Version="4.0.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
   </ItemGroup>