diff --git a/src/Objectivity.AutoFixture.XUnit2.AutoFakeItEasy.Tests/Objectivity.AutoFixture.XUnit2.AutoFakeItEasy.Tests.csproj b/src/Objectivity.AutoFixture.XUnit2.AutoFakeItEasy.Tests/Objectivity.AutoFixture.XUnit2.AutoFakeItEasy.Tests.csproj
index 45872960..bf3d5bde 100644
--- a/src/Objectivity.AutoFixture.XUnit2.AutoFakeItEasy.Tests/Objectivity.AutoFixture.XUnit2.AutoFakeItEasy.Tests.csproj
+++ b/src/Objectivity.AutoFixture.XUnit2.AutoFakeItEasy.Tests/Objectivity.AutoFixture.XUnit2.AutoFakeItEasy.Tests.csproj
@@ -66,7 +66,7 @@
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+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
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diff --git a/src/Objectivity.AutoFixture.XUnit2.AutoMoq.Tests/Objectivity.AutoFixture.XUnit2.AutoMoq.Tests.csproj b/src/Objectivity.AutoFixture.XUnit2.AutoMoq.Tests/Objectivity.AutoFixture.XUnit2.AutoMoq.Tests.csproj
index 4062b36f..141534bd 100644
--- a/src/Objectivity.AutoFixture.XUnit2.AutoMoq.Tests/Objectivity.AutoFixture.XUnit2.AutoMoq.Tests.csproj
+++ b/src/Objectivity.AutoFixture.XUnit2.AutoMoq.Tests/Objectivity.AutoFixture.XUnit2.AutoMoq.Tests.csproj
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diff --git a/src/Objectivity.AutoFixture.XUnit2.AutoNSubstitute.Tests/Objectivity.AutoFixture.XUnit2.AutoNSubstitute.Tests.csproj b/src/Objectivity.AutoFixture.XUnit2.AutoNSubstitute.Tests/Objectivity.AutoFixture.XUnit2.AutoNSubstitute.Tests.csproj
index d53bb44c..e0e8207b 100644
--- a/src/Objectivity.AutoFixture.XUnit2.AutoNSubstitute.Tests/Objectivity.AutoFixture.XUnit2.AutoNSubstitute.Tests.csproj
+++ b/src/Objectivity.AutoFixture.XUnit2.AutoNSubstitute.Tests/Objectivity.AutoFixture.XUnit2.AutoNSubstitute.Tests.csproj
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diff --git a/src/Objectivity.AutoFixture.XUnit2.Core.Tests/Objectivity.AutoFixture.XUnit2.Core.Tests.csproj b/src/Objectivity.AutoFixture.XUnit2.Core.Tests/Objectivity.AutoFixture.XUnit2.Core.Tests.csproj
index d0042b52..b03d0563 100644
--- a/src/Objectivity.AutoFixture.XUnit2.Core.Tests/Objectivity.AutoFixture.XUnit2.Core.Tests.csproj
+++ b/src/Objectivity.AutoFixture.XUnit2.Core.Tests/Objectivity.AutoFixture.XUnit2.Core.Tests.csproj
@@ -65,7 +65,7 @@
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