diff --git a/csharp/test/Apache.Arrow.Adbc.Tests/Apache.Arrow.Adbc.Tests.csproj b/csharp/test/Apache.Arrow.Adbc.Tests/Apache.Arrow.Adbc.Tests.csproj
index 6b6f2b20af..f187cb94c6 100644
--- a/csharp/test/Apache.Arrow.Adbc.Tests/Apache.Arrow.Adbc.Tests.csproj
+++ b/csharp/test/Apache.Arrow.Adbc.Tests/Apache.Arrow.Adbc.Tests.csproj
@@ -12,7 +12,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageReference Include="Moq" Version="4.20.70" />
     <PackageReference Include="System.Text.Json" Version="7.0.4" />
-    <PackageReference Include="xunit" Version="2.6.5" />
+    <PackageReference Include="xunit" Version="2.6.6" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/csharp/test/Drivers/BigQuery/Apache.Arrow.Adbc.Tests.Drivers.BigQuery.csproj b/csharp/test/Drivers/BigQuery/Apache.Arrow.Adbc.Tests.Drivers.BigQuery.csproj
index 9a1ee69a31..74712cdc2f 100644
--- a/csharp/test/Drivers/BigQuery/Apache.Arrow.Adbc.Tests.Drivers.BigQuery.csproj
+++ b/csharp/test/Drivers/BigQuery/Apache.Arrow.Adbc.Tests.Drivers.BigQuery.csproj
@@ -4,7 +4,7 @@
    </PropertyGroup>
     <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">
        <PrivateAssets>all</PrivateAssets>
        <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/csharp/test/Drivers/FlightSql/Apache.Arrow.Adbc.Tests.Drivers.FlightSql.csproj b/csharp/test/Drivers/FlightSql/Apache.Arrow.Adbc.Tests.Drivers.FlightSql.csproj
index 315ba9107f..9036f5acfd 100644
--- a/csharp/test/Drivers/FlightSql/Apache.Arrow.Adbc.Tests.Drivers.FlightSql.csproj
+++ b/csharp/test/Drivers/FlightSql/Apache.Arrow.Adbc.Tests.Drivers.FlightSql.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
   <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">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/csharp/test/Drivers/Interop/Snowflake/Apache.Arrow.Adbc.Tests.Drivers.Interop.Snowflake.csproj b/csharp/test/Drivers/Interop/Snowflake/Apache.Arrow.Adbc.Tests.Drivers.Interop.Snowflake.csproj
index fd1df4f271..e417ce5424 100644
--- a/csharp/test/Drivers/Interop/Snowflake/Apache.Arrow.Adbc.Tests.Drivers.Interop.Snowflake.csproj
+++ b/csharp/test/Drivers/Interop/Snowflake/Apache.Arrow.Adbc.Tests.Drivers.Interop.Snowflake.csproj
@@ -4,7 +4,7 @@
    </PropertyGroup>
     <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">
        <PrivateAssets>all</PrivateAssets>
        <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>