diff --git a/Src/Support/Google.Apis.Auth.Tests/Google.Apis.Auth.Tests.csproj b/Src/Support/Google.Apis.Auth.Tests/Google.Apis.Auth.Tests.csproj
index cf84c7c7ff2..ea78dc3a6cc 100644
--- a/Src/Support/Google.Apis.Auth.Tests/Google.Apis.Auth.Tests.csproj
+++ b/Src/Support/Google.Apis.Auth.Tests/Google.Apis.Auth.Tests.csproj
@@ -17,7 +17,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageReference Include="xunit" Version="2.6.5" />
+    <PackageReference Include="xunit" Version="2.6.6" />
     <PackageReference Include="Xunit.Combinatorial" Version="1.5.25" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <PackageReference Include="Xunit.SkippableFact" Version="1.4.13" />
diff --git a/Src/Support/Google.Apis.Tests/Google.Apis.Tests.csproj b/Src/Support/Google.Apis.Tests/Google.Apis.Tests.csproj
index 02848be37f2..9775f6a47e9 100644
--- a/Src/Support/Google.Apis.Tests/Google.Apis.Tests.csproj
+++ b/Src/Support/Google.Apis.Tests/Google.Apis.Tests.csproj
@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageReference Include="xunit" Version="2.6.5" />
+    <PackageReference Include="xunit" Version="2.6.6" />
     <PackageReference Include="Xunit.Combinatorial" Version="1.5.25" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <ProjectReference Include="..\Google.Apis\Google.Apis.csproj" />
diff --git a/Src/Support/IntegrationTests/IntegrationTests.csproj b/Src/Support/IntegrationTests/IntegrationTests.csproj
index 356eef389e6..da850b0e282 100644
--- a/Src/Support/IntegrationTests/IntegrationTests.csproj
+++ b/Src/Support/IntegrationTests/IntegrationTests.csproj
@@ -17,7 +17,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageReference Include="xunit" Version="2.6.5" />
+    <PackageReference Include="xunit" Version="2.6.6" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <ProjectReference Include="..\Google.Apis.Auth\Google.Apis.Auth.csproj" />
     <ProjectReference Include="..\Google.Apis.Tests\Google.Apis.Tests.csproj" />