diff --git a/tests/Koi.Functions.Tests/Koi.Functions.Tests.csproj b/tests/Koi.Functions.Tests/Koi.Functions.Tests.csproj
index ee0cff0..1fdaae0 100644
--- a/tests/Koi.Functions.Tests/Koi.Functions.Tests.csproj
+++ b/tests/Koi.Functions.Tests/Koi.Functions.Tests.csproj
@@ -11,7 +11,7 @@
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     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="4.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/Koi.Functions.Tests/packages.lock.json b/tests/Koi.Functions.Tests/packages.lock.json
index f9dc0d1..f3588da 100644
--- a/tests/Koi.Functions.Tests/packages.lock.json
+++ b/tests/Koi.Functions.Tests/packages.lock.json
@@ -31,9 +31,9 @@
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       "xunit.runner.visualstudio": {
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-        "resolved": "3.1.4",
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+        "requested": "[4.0.0, )",
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       "Azure.Core": {
         "type": "Transitive",