diff --git a/tests/Logging.XUnit.Tests/MartinCostello.Logging.XUnit.Tests.csproj b/tests/Logging.XUnit.Tests/MartinCostello.Logging.XUnit.Tests.csproj
index e77f31c6..64bcb80e 100644
--- a/tests/Logging.XUnit.Tests/MartinCostello.Logging.XUnit.Tests.csproj
+++ b/tests/Logging.XUnit.Tests/MartinCostello.Logging.XUnit.Tests.csproj
@@ -2,6 +2,7 @@
   <PropertyGroup>
     <Description>Tests for MartinCostello.Logging.XUnit.</Description>
     <MSBuildTreatWarningsAsErrors>false</MSBuildTreatWarningsAsErrors>
+    <NoWarn>$(NoWarn);CA1873</NoWarn>
     <RootNamespace>MartinCostello.Logging.XUnit</RootNamespace>
     <TargetFramework>net9.0</TargetFramework>
     <UseDefaultCodeAnalysisRuleSet>true</UseDefaultCodeAnalysisRuleSet>
diff --git a/tests/Logging.XUnit.v3.Tests/MartinCostello.Logging.XUnit.v3.Tests.csproj b/tests/Logging.XUnit.v3.Tests/MartinCostello.Logging.XUnit.v3.Tests.csproj
index fc3ae2c8..53186f9d 100644
--- a/tests/Logging.XUnit.v3.Tests/MartinCostello.Logging.XUnit.v3.Tests.csproj
+++ b/tests/Logging.XUnit.v3.Tests/MartinCostello.Logging.XUnit.v3.Tests.csproj
@@ -3,6 +3,7 @@
     <DefineConstants>$(DefineConstants);XUNIT_V3</DefineConstants>
     <Description>Tests for MartinCostello.Logging.XUnit.v3.</Description>
     <MSBuildTreatWarningsAsErrors>false</MSBuildTreatWarningsAsErrors>
+    <NoWarn>$(NoWarn);CA1873</NoWarn>
     <OutputType>Exe</OutputType>
     <RootNamespace>MartinCostello.Logging.XUnit</RootNamespace>
     <TargetFramework>net9.0</TargetFramework>
diff --git a/tests/SampleApp/SampleApp.csproj b/tests/SampleApp/SampleApp.csproj
index f989a167..9335bc40 100644
--- a/tests/SampleApp/SampleApp.csproj
+++ b/tests/SampleApp/SampleApp.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
   <PropertyGroup>
     <IsPackable>false</IsPackable>
-    <NoWarn>$(NoWarn);CA1801;CA1822;CA1861;CA1873;SA1600;SA1601</NoWarn>
+    <NoWarn>$(NoWarn);CA1801;CA1822;CA1861;SA1600;SA1601</NoWarn>
     <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>