diff --git a/csharp/test/Apache.Arrow.Compression.Tests/Apache.Arrow.Compression.Tests.csproj b/csharp/test/Apache.Arrow.Compression.Tests/Apache.Arrow.Compression.Tests.csproj
index 7a93d8f92635b..8ed7a93bdcf27 100644
--- a/csharp/test/Apache.Arrow.Compression.Tests/Apache.Arrow.Compression.Tests.csproj
+++ b/csharp/test/Apache.Arrow.Compression.Tests/Apache.Arrow.Compression.Tests.csproj
@@ -8,7 +8,7 @@
 
   <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="2.5.6" />
   </ItemGroup>
 
diff --git a/csharp/test/Apache.Arrow.Flight.Sql.Tests/Apache.Arrow.Flight.Sql.Tests.csproj b/csharp/test/Apache.Arrow.Flight.Sql.Tests/Apache.Arrow.Flight.Sql.Tests.csproj
index 7799577535ded..b5e7170a8c31d 100644
--- a/csharp/test/Apache.Arrow.Flight.Sql.Tests/Apache.Arrow.Flight.Sql.Tests.csproj
+++ b/csharp/test/Apache.Arrow.Flight.Sql.Tests/Apache.Arrow.Flight.Sql.Tests.csproj
@@ -7,7 +7,7 @@
 
     <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="2.5.6" />
       <PackageReference Include="coverlet.collector" Version="6.0.0" />
     </ItemGroup>
diff --git a/csharp/test/Apache.Arrow.Flight.Tests/Apache.Arrow.Flight.Tests.csproj b/csharp/test/Apache.Arrow.Flight.Tests/Apache.Arrow.Flight.Tests.csproj
index 972aa178eabe8..a7c52846fd9a4 100644
--- a/csharp/test/Apache.Arrow.Flight.Tests/Apache.Arrow.Flight.Tests.csproj
+++ b/csharp/test/Apache.Arrow.Flight.Tests/Apache.Arrow.Flight.Tests.csproj
@@ -7,7 +7,7 @@
 
   <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="2.5.6" />
     <PackageReference Include="coverlet.collector" Version="6.0.0" />
   </ItemGroup>
diff --git a/csharp/test/Apache.Arrow.Tests/Apache.Arrow.Tests.csproj b/csharp/test/Apache.Arrow.Tests/Apache.Arrow.Tests.csproj
index afb636123b37b..d8a92ff756751 100644
--- a/csharp/test/Apache.Arrow.Tests/Apache.Arrow.Tests.csproj
+++ b/csharp/test/Apache.Arrow.Tests/Apache.Arrow.Tests.csproj
@@ -15,7 +15,7 @@
 
   <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="2.5.6">
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       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>