diff --git a/Application/EdFi.Ods.Api/EdFi.Ods.Api.csproj b/Application/EdFi.Ods.Api/EdFi.Ods.Api.csproj
index f05f57f742..e68635683a 100644
--- a/Application/EdFi.Ods.Api/EdFi.Ods.Api.csproj
+++ b/Application/EdFi.Ods.Api/EdFi.Ods.Api.csproj
@@ -6,7 +6,7 @@
     <AssemblyName>EdFi.Ods.Api</AssemblyName>
     <AssemblyVersion>99.99.99.00</AssemblyVersion>
     <RootNamespace>EdFi.Ods.Api</RootNamespace>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RestorePackages>true</RestorePackages>
     <OutputType>Library</OutputType>
     <PackageProjectUrl>https://github.com/Ed-Fi-Alliance-OSS/Ed-Fi-ODS</PackageProjectUrl>
diff --git a/Application/EdFi.Ods.Repositories.NHibernate.Tests/EdFi.Ods.Repositories.NHibernate.Tests.csproj b/Application/EdFi.Ods.Repositories.NHibernate.Tests/EdFi.Ods.Repositories.NHibernate.Tests.csproj
index c778bd48e3..2e57766933 100644
--- a/Application/EdFi.Ods.Repositories.NHibernate.Tests/EdFi.Ods.Repositories.NHibernate.Tests.csproj
+++ b/Application/EdFi.Ods.Repositories.NHibernate.Tests/EdFi.Ods.Repositories.NHibernate.Tests.csproj
@@ -6,7 +6,7 @@
     <TargetFramework>net8.0</TargetFramework>
     <AssemlbyName>EdFi.Ods.Repositories.NHibernate.Tests</AssemlbyName>
     <RootNamespace>EdFi.Ods.Repositories.NHibernate.Tests</RootNamespace>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RestorePackages>true</RestorePackages>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
diff --git a/Application/EdFi.Ods.Tests.TestExtension/EdFi.Ods.Tests.TestExtension.csproj b/Application/EdFi.Ods.Tests.TestExtension/EdFi.Ods.Tests.TestExtension.csproj
index 8ec40bb5ae..d30623b2d9 100644
--- a/Application/EdFi.Ods.Tests.TestExtension/EdFi.Ods.Tests.TestExtension.csproj
+++ b/Application/EdFi.Ods.Tests.TestExtension/EdFi.Ods.Tests.TestExtension.csproj
@@ -3,7 +3,7 @@
     <TargetFramework>net8.0</TargetFramework>
     <AssemblyName>EdFi.Ods.Tests.FakeExtension</AssemblyName>
     <RootNamespace>EdFi.Ods.Tests.FakeExtension</RootNamespace>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RestorePackages>true</RestorePackages>
     <OutputType>Library</OutputType>
   </PropertyGroup>
diff --git a/Application/EdFi.Ods.Tests/EdFi.Ods.Tests.csproj b/Application/EdFi.Ods.Tests/EdFi.Ods.Tests.csproj
index 4e2c8e977b..bc3cbf0217 100644
--- a/Application/EdFi.Ods.Tests/EdFi.Ods.Tests.csproj
+++ b/Application/EdFi.Ods.Tests/EdFi.Ods.Tests.csproj
@@ -6,7 +6,7 @@
     <TargetFramework>net8.0</TargetFramework>
     <AssemblyName>EdFi.Ods.Tests</AssemblyName>
     <RootNamespace>EdFi.Ods.Tests</RootNamespace>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RestorePackages>true</RestorePackages>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
diff --git a/Application/Test.Common/Test.Common.csproj b/Application/Test.Common/Test.Common.csproj
index 8789e3280a..9a7a287667 100644
--- a/Application/Test.Common/Test.Common.csproj
+++ b/Application/Test.Common/Test.Common.csproj
@@ -3,7 +3,7 @@
     <TargetFramework>net8.0</TargetFramework>
     <AssemblyName>Test.Common</AssemblyName>
     <RootNamespace>Test.Common</RootNamespace>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RestorePackages>true</RestorePackages>
     <OutputType>Library</OutputType>
   </PropertyGroup>
diff --git a/Utilities/GenerateSecurityGraphs/GenerateSecurityGraphs/GenerateSecurityGraphs.csproj b/Utilities/GenerateSecurityGraphs/GenerateSecurityGraphs/GenerateSecurityGraphs.csproj
index 6a69a25cf4..456ea37694 100644
--- a/Utilities/GenerateSecurityGraphs/GenerateSecurityGraphs/GenerateSecurityGraphs.csproj
+++ b/Utilities/GenerateSecurityGraphs/GenerateSecurityGraphs/GenerateSecurityGraphs.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>net8.0</TargetFramework>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RestorePackages>true</RestorePackages>
   </PropertyGroup>
   <ItemGroup>
diff --git a/tests/EdFi.Admin.DataAccess.IntegrationTests/EdFi.Admin.DataAccess.IntegrationTests.csproj b/tests/EdFi.Admin.DataAccess.IntegrationTests/EdFi.Admin.DataAccess.IntegrationTests.csproj
index aa48243c66..21113733ab 100644
--- a/tests/EdFi.Admin.DataAccess.IntegrationTests/EdFi.Admin.DataAccess.IntegrationTests.csproj
+++ b/tests/EdFi.Admin.DataAccess.IntegrationTests/EdFi.Admin.DataAccess.IntegrationTests.csproj
@@ -5,7 +5,7 @@
     <Product>EdFi.Admin.DataAccess.IntegrationTests</Product>
     <Assembly>EdFi.Admin.DataAccess.IntegrationTests</Assembly>
     <RootNameSpace>EdFi.Admin.DataAccess.IntegrationTests</RootNameSpace>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
   </PropertyGroup>
diff --git a/tests/EdFi.Admin.DataAccess.UnitTests/EdFi.Admin.DataAccess.UnitTests.csproj b/tests/EdFi.Admin.DataAccess.UnitTests/EdFi.Admin.DataAccess.UnitTests.csproj
index 63f92098af..71bc9e9cf8 100644
--- a/tests/EdFi.Admin.DataAccess.UnitTests/EdFi.Admin.DataAccess.UnitTests.csproj
+++ b/tests/EdFi.Admin.DataAccess.UnitTests/EdFi.Admin.DataAccess.UnitTests.csproj
@@ -3,7 +3,7 @@
     <TargetFramework>net8.0</TargetFramework>
     <AssemblyName>EdFi.Admin.DataAccess.UnitTests</AssemblyName>
     <RootNamespace>EdFi.Admin.DataAccess.UnitTests</RootNamespace>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RestorePackages>true</RestorePackages>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
diff --git a/tests/EdFi.Ods.Api.IntegrationTests/EdFi.Ods.Api.IntegrationTests.csproj b/tests/EdFi.Ods.Api.IntegrationTests/EdFi.Ods.Api.IntegrationTests.csproj
index 75f04abe7f..a04c27fb08 100644
--- a/tests/EdFi.Ods.Api.IntegrationTests/EdFi.Ods.Api.IntegrationTests.csproj
+++ b/tests/EdFi.Ods.Api.IntegrationTests/EdFi.Ods.Api.IntegrationTests.csproj
@@ -6,7 +6,7 @@
     <TargetFramework>net8.0</TargetFramework>
     <AssemblyName>EdFi.Ods.Api.IntegrationTests</AssemblyName>
     <RootNamespace>EdFi.Ods.Api.IntegrationTests</RootNamespace>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RestorePackages>true</RestorePackages>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
diff --git a/tests/EdFi.Ods.WebApi.CompositeSpecFlowTests/EdFi.Ods.WebApi.CompositeSpecFlowTests.csproj b/tests/EdFi.Ods.WebApi.CompositeSpecFlowTests/EdFi.Ods.WebApi.CompositeSpecFlowTests.csproj
index e2b6b3b7b1..e9d806470f 100644
--- a/tests/EdFi.Ods.WebApi.CompositeSpecFlowTests/EdFi.Ods.WebApi.CompositeSpecFlowTests.csproj
+++ b/tests/EdFi.Ods.WebApi.CompositeSpecFlowTests/EdFi.Ods.WebApi.CompositeSpecFlowTests.csproj
@@ -5,7 +5,7 @@
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <RootNamespace>EdFi.Ods.WebApi.CompositeSpecFlowTests</RootNamespace>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RestorePackages>true</RestorePackages>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
diff --git a/tests/EdFi.Ods.WebApi.IntegrationTests/EdFi.Ods.WebApi.IntegrationTests.csproj b/tests/EdFi.Ods.WebApi.IntegrationTests/EdFi.Ods.WebApi.IntegrationTests.csproj
index 883806ab43..91e3c63087 100644
--- a/tests/EdFi.Ods.WebApi.IntegrationTests/EdFi.Ods.WebApi.IntegrationTests.csproj
+++ b/tests/EdFi.Ods.WebApi.IntegrationTests/EdFi.Ods.WebApi.IntegrationTests.csproj
@@ -6,7 +6,7 @@
     <TargetFramework>net8.0</TargetFramework>
     <AssemblyName>EdFi.Ods.WebApi.IntegrationTests</AssemblyName>
     <RootNamespace>EdFi.Ods.WebApi.IntegrationTests</RootNamespace>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RestorePackages>true</RestorePackages>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
diff --git a/tests/EdFi.Security.DataAccess.IntegrationTests/EdFi.Security.DataAccess.IntegrationTests.csproj b/tests/EdFi.Security.DataAccess.IntegrationTests/EdFi.Security.DataAccess.IntegrationTests.csproj
index a158ece456..6defee421b 100644
--- a/tests/EdFi.Security.DataAccess.IntegrationTests/EdFi.Security.DataAccess.IntegrationTests.csproj
+++ b/tests/EdFi.Security.DataAccess.IntegrationTests/EdFi.Security.DataAccess.IntegrationTests.csproj
@@ -6,7 +6,7 @@
     <Assembly>EdFi.Security.DataAccess.IntegrationTests</Assembly>
     <RootNameSpace>EdFi.Security.DataAccess.IntegrationTests</RootNameSpace>
     <Copyright>Copyright © 2024, Ed-Fi Alliance and contributors</Copyright>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
   </PropertyGroup>
diff --git a/tests/EdFi.Security.DataAccess.UnitTests/EdFi.Security.DataAccess.UnitTests.csproj b/tests/EdFi.Security.DataAccess.UnitTests/EdFi.Security.DataAccess.UnitTests.csproj
index 2a8d5fc5fe..b2778b8e43 100644
--- a/tests/EdFi.Security.DataAccess.UnitTests/EdFi.Security.DataAccess.UnitTests.csproj
+++ b/tests/EdFi.Security.DataAccess.UnitTests/EdFi.Security.DataAccess.UnitTests.csproj
@@ -3,7 +3,7 @@
     <TargetFramework>net8.0</TargetFramework>
     <AssemblyName>EdFi.Security.DataAccess.UnitTests</AssemblyName>
     <RootNamespace>EdFi.Security.DataAccess.UnitTests</RootNamespace>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RestorePackages>true</RestorePackages>
     <OutputType>Library</OutputType>
     <IsTestProject>true</IsTestProject>
diff --git a/tests/EdFi.TestFixture/EdFi.TestFixture.csproj b/tests/EdFi.TestFixture/EdFi.TestFixture.csproj
index 813e4a1e7a..dbc4aeb136 100644
--- a/tests/EdFi.TestFixture/EdFi.TestFixture.csproj
+++ b/tests/EdFi.TestFixture/EdFi.TestFixture.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <Configurations>Debug;Release</Configurations>
-    <TreatErrorsAsWarning>true</TreatErrorsAsWarning>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RestorePackages>true</RestorePackages>
     <OutputType>Library</OutputType>
     <IsPackable>false</IsPackable>