diff --git a/tests/RoslynDiff.Cli.Tests/RoslynDiff.Cli.Tests.csproj b/tests/RoslynDiff.Cli.Tests/RoslynDiff.Cli.Tests.csproj
index ff9a5d9..4e3658d 100644
--- a/tests/RoslynDiff.Cli.Tests/RoslynDiff.Cli.Tests.csproj
+++ b/tests/RoslynDiff.Cli.Tests/RoslynDiff.Cli.Tests.csproj
@@ -10,7 +10,7 @@
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   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/tests/RoslynDiff.Core.Tests/RoslynDiff.Core.Tests.csproj b/tests/RoslynDiff.Core.Tests/RoslynDiff.Core.Tests.csproj
index 5c49b32..ef0b60a 100644
--- a/tests/RoslynDiff.Core.Tests/RoslynDiff.Core.Tests.csproj
+++ b/tests/RoslynDiff.Core.Tests/RoslynDiff.Core.Tests.csproj
@@ -16,7 +16,7 @@
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   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/tests/RoslynDiff.Integration.Tests/RoslynDiff.Integration.Tests.csproj b/tests/RoslynDiff.Integration.Tests/RoslynDiff.Integration.Tests.csproj
index 16ffba0..5fbc8e5 100644
--- a/tests/RoslynDiff.Integration.Tests/RoslynDiff.Integration.Tests.csproj
+++ b/tests/RoslynDiff.Integration.Tests/RoslynDiff.Integration.Tests.csproj
@@ -28,7 +28,7 @@
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   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/tests/RoslynDiff.Output.Tests/RoslynDiff.Output.Tests.csproj b/tests/RoslynDiff.Output.Tests/RoslynDiff.Output.Tests.csproj
index 48a9bc5..0fbc597 100644
--- a/tests/RoslynDiff.Output.Tests/RoslynDiff.Output.Tests.csproj
+++ b/tests/RoslynDiff.Output.Tests/RoslynDiff.Output.Tests.csproj
@@ -10,7 +10,7 @@
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   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/tests/RoslynDiff.TestUtilities/RoslynDiff.TestUtilities.csproj b/tests/RoslynDiff.TestUtilities/RoslynDiff.TestUtilities.csproj
index f3e7e37..81e87e8 100644
--- a/tests/RoslynDiff.TestUtilities/RoslynDiff.TestUtilities.csproj
+++ b/tests/RoslynDiff.TestUtilities/RoslynDiff.TestUtilities.csproj
@@ -6,7 +6,7 @@
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   <ItemGroup>
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+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="HtmlAgilityPack" Version="1.12.4" />
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