diff --git a/Sources/Tests/SecurityManagementTests/SecurityManagement.Test.csproj b/Sources/Tests/SecurityManagementTests/SecurityManagement.Test.csproj
index 9bc1ea8..13d47d6 100644
--- a/Sources/Tests/SecurityManagementTests/SecurityManagement.Test.csproj
+++ b/Sources/Tests/SecurityManagementTests/SecurityManagement.Test.csproj
@@ -23,7 +23,7 @@
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diff --git a/Sources/Tests/Tuvi.Core.Backup.Impl.Tests/Tuvi.Core.Backup.Impl.Tests.csproj b/Sources/Tests/Tuvi.Core.Backup.Impl.Tests/Tuvi.Core.Backup.Impl.Tests.csproj
index 5455ea2..6fc6d9a 100644
--- a/Sources/Tests/Tuvi.Core.Backup.Impl.Tests/Tuvi.Core.Backup.Impl.Tests.csproj
+++ b/Sources/Tests/Tuvi.Core.Backup.Impl.Tests/Tuvi.Core.Backup.Impl.Tests.csproj
@@ -22,7 +22,7 @@
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+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
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   <ItemGroup>
diff --git a/Sources/Tests/Tuvi.Core.DataStorage.Impl.Tests/Tuvi.Core.DataStorage.Impl.Tests.csproj b/Sources/Tests/Tuvi.Core.DataStorage.Impl.Tests/Tuvi.Core.DataStorage.Impl.Tests.csproj
index 1844ad9..a528998 100644
--- a/Sources/Tests/Tuvi.Core.DataStorage.Impl.Tests/Tuvi.Core.DataStorage.Impl.Tests.csproj
+++ b/Sources/Tests/Tuvi.Core.DataStorage.Impl.Tests/Tuvi.Core.DataStorage.Impl.Tests.csproj
@@ -22,7 +22,7 @@
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diff --git a/Sources/Tests/Tuvi.Core.Dec.Bitcoin.Tests/Tuvi.Core.Dec.Bitcoin.Tests.csproj b/Sources/Tests/Tuvi.Core.Dec.Bitcoin.Tests/Tuvi.Core.Dec.Bitcoin.Tests.csproj
index 5062bb9..37884a9 100644
--- a/Sources/Tests/Tuvi.Core.Dec.Bitcoin.Tests/Tuvi.Core.Dec.Bitcoin.Tests.csproj
+++ b/Sources/Tests/Tuvi.Core.Dec.Bitcoin.Tests/Tuvi.Core.Dec.Bitcoin.Tests.csproj
@@ -26,7 +26,7 @@
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diff --git a/Sources/Tests/Tuvi.Core.Dec.Ethereum.Tests/Tuvi.Core.Dec.Ethereum.Tests.csproj b/Sources/Tests/Tuvi.Core.Dec.Ethereum.Tests/Tuvi.Core.Dec.Ethereum.Tests.csproj
index 8e43525..319c303 100644
--- a/Sources/Tests/Tuvi.Core.Dec.Ethereum.Tests/Tuvi.Core.Dec.Ethereum.Tests.csproj
+++ b/Sources/Tests/Tuvi.Core.Dec.Ethereum.Tests/Tuvi.Core.Dec.Ethereum.Tests.csproj
@@ -24,7 +24,7 @@
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+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
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   <ItemGroup>
     <ProjectReference Include="..\..\Tuvi.Core.Dec.Ethereum\Tuvi.Core.Dec.Ethereum.csproj" />
diff --git a/Sources/Tests/Tuvi.Core.Dec.Names.Tests/Tuvi.Core.Dec.Names.Tests.csproj b/Sources/Tests/Tuvi.Core.Dec.Names.Tests/Tuvi.Core.Dec.Names.Tests.csproj
index 4d7c9a6..449d85e 100644
--- a/Sources/Tests/Tuvi.Core.Dec.Names.Tests/Tuvi.Core.Dec.Names.Tests.csproj
+++ b/Sources/Tests/Tuvi.Core.Dec.Names.Tests/Tuvi.Core.Dec.Names.Tests.csproj
@@ -18,7 +18,7 @@
   </PropertyGroup>
 
   <ItemGroup>
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     <PackageReference Include="NUnit3TestAdapter" Version="6.2.0" />
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diff --git a/Sources/Tests/Tuvi.Core.Entities.Tests/Tuvi.Core.Entities.Tests.csproj b/Sources/Tests/Tuvi.Core.Entities.Tests/Tuvi.Core.Entities.Tests.csproj
index af92c44..e9ea07e 100644
--- a/Sources/Tests/Tuvi.Core.Entities.Tests/Tuvi.Core.Entities.Tests.csproj
+++ b/Sources/Tests/Tuvi.Core.Entities.Tests/Tuvi.Core.Entities.Tests.csproj
@@ -20,7 +20,7 @@
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   <ItemGroup>
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     <PackageReference Include="NUnit3TestAdapter" Version="6.2.0" />
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diff --git a/Sources/Tests/Tuvi.Core.Mail.Impl.Tests/Tuvi.Core.Mail.Impl.Tests.csproj b/Sources/Tests/Tuvi.Core.Mail.Impl.Tests/Tuvi.Core.Mail.Impl.Tests.csproj
index 698c806..92004b5 100644
--- a/Sources/Tests/Tuvi.Core.Mail.Impl.Tests/Tuvi.Core.Mail.Impl.Tests.csproj
+++ b/Sources/Tests/Tuvi.Core.Mail.Impl.Tests/Tuvi.Core.Mail.Impl.Tests.csproj
@@ -23,7 +23,7 @@
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+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
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   <ItemGroup>
diff --git a/Sources/Tests/Tuvi.Core.Tests/Tuvi.Core.Tests.csproj b/Sources/Tests/Tuvi.Core.Tests/Tuvi.Core.Tests.csproj
index 9ba28fa..2dcbb4b 100644
--- a/Sources/Tests/Tuvi.Core.Tests/Tuvi.Core.Tests.csproj
+++ b/Sources/Tests/Tuvi.Core.Tests/Tuvi.Core.Tests.csproj
@@ -27,7 +27,7 @@
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+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
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   <ItemGroup>
diff --git a/Sources/Tests/Tuvi.Dec.Web.Impl.Tests/Tuvi.Dec.Web.Impl.Tests.csproj b/Sources/Tests/Tuvi.Dec.Web.Impl.Tests/Tuvi.Dec.Web.Impl.Tests.csproj
index 1463939..157aed1 100644
--- a/Sources/Tests/Tuvi.Dec.Web.Impl.Tests/Tuvi.Dec.Web.Impl.Tests.csproj
+++ b/Sources/Tests/Tuvi.Dec.Web.Impl.Tests/Tuvi.Dec.Web.Impl.Tests.csproj
@@ -20,7 +20,7 @@
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   <ItemGroup>
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     <PackageReference Include="NUnit3TestAdapter" Version="6.2.0" />
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