diff --git a/tests/DocRefract.Tests/DocRefract.Tests.csproj b/tests/DocRefract.Tests/DocRefract.Tests.csproj
index 3fa0f40..2bb1c88 100644
--- a/tests/DocRefract.Tests/DocRefract.Tests.csproj
+++ b/tests/DocRefract.Tests/DocRefract.Tests.csproj
@@ -10,9 +10,9 @@
 
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+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.9.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="4.0.0" />
   </ItemGroup>
 
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diff --git a/tests/DocRefract.Tests/packages.lock.json b/tests/DocRefract.Tests/packages.lock.json
index 53ba8f4..1967a7b 100644
--- a/tests/DocRefract.Tests/packages.lock.json
+++ b/tests/DocRefract.Tests/packages.lock.json
@@ -10,12 +10,12 @@
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       "xunit": {
@@ -31,9 +31,9 @@
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@@ -53,20 +53,20 @@
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