diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 73f40a18..f8cafcd3 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -17,8 +17,6 @@ jobs:
               uses: actions/setup-dotnet@v5
               with:
                   dotnet-version: |
-                      8.0.x
-                      9.0.x
                       10.0.x
                       11.0.x
 
diff --git a/.github/workflows/check_pr.yml b/.github/workflows/check_pr.yml
index 1205f66d..6c508a14 100644
--- a/.github/workflows/check_pr.yml
+++ b/.github/workflows/check_pr.yml
@@ -12,8 +12,6 @@ jobs:
               uses: actions/setup-dotnet@v5
               with:
                   dotnet-version: |
-                      8.0.x
-                      9.0.x
                       10.0.x
                       11.0.x
 
diff --git a/SabreTools.Data.Extensions.Test/SabreTools.Data.Extensions.Test.csproj b/SabreTools.Data.Extensions.Test/SabreTools.Data.Extensions.Test.csproj
index ffe40dae..a476090a 100644
--- a/SabreTools.Data.Extensions.Test/SabreTools.Data.Extensions.Test.csproj
+++ b/SabreTools.Data.Extensions.Test/SabreTools.Data.Extensions.Test.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0;net11.0</TargetFrameworks>
+        <TargetFrameworks>net10.0;net11.0</TargetFrameworks>
         <IsPackable>false</IsPackable>
         <LangVersion>latest</LangVersion>
         <Nullable>enable</Nullable>
diff --git a/SabreTools.Metadata.DatFiles.Test/SabreTools.Metadata.DatFiles.Test.csproj b/SabreTools.Metadata.DatFiles.Test/SabreTools.Metadata.DatFiles.Test.csproj
index 08ac5232..998af67a 100644
--- a/SabreTools.Metadata.DatFiles.Test/SabreTools.Metadata.DatFiles.Test.csproj
+++ b/SabreTools.Metadata.DatFiles.Test/SabreTools.Metadata.DatFiles.Test.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0;net11.0</TargetFrameworks>
+        <TargetFrameworks>net10.0;net11.0</TargetFrameworks>
         <IsPackable>false</IsPackable>
         <LangVersion>latest</LangVersion>
         <Nullable>enable</Nullable>
diff --git a/SabreTools.Metadata.DatItems.Test/SabreTools.Metadata.DatItems.Test.csproj b/SabreTools.Metadata.DatItems.Test/SabreTools.Metadata.DatItems.Test.csproj
index 9933e6e8..09a5db2f 100644
--- a/SabreTools.Metadata.DatItems.Test/SabreTools.Metadata.DatItems.Test.csproj
+++ b/SabreTools.Metadata.DatItems.Test/SabreTools.Metadata.DatItems.Test.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0;net11.0</TargetFrameworks>
+        <TargetFrameworks>net10.0;net11.0</TargetFrameworks>
         <IsPackable>false</IsPackable>
         <LangVersion>latest</LangVersion>
         <Nullable>enable</Nullable>
diff --git a/SabreTools.Metadata.Filter.Test/SabreTools.Metadata.Filter.Test.csproj b/SabreTools.Metadata.Filter.Test/SabreTools.Metadata.Filter.Test.csproj
index b213a6c5..e75b11d3 100644
--- a/SabreTools.Metadata.Filter.Test/SabreTools.Metadata.Filter.Test.csproj
+++ b/SabreTools.Metadata.Filter.Test/SabreTools.Metadata.Filter.Test.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0;net11.0</TargetFrameworks>
+        <TargetFrameworks>net10.0;net11.0</TargetFrameworks>
         <IsPackable>false</IsPackable>
         <LangVersion>latest</LangVersion>
         <Nullable>enable</Nullable>
diff --git a/SabreTools.ObjectIdentifier.Test/SabreTools.ObjectIdentifier.Test.csproj b/SabreTools.ObjectIdentifier.Test/SabreTools.ObjectIdentifier.Test.csproj
index 7925418d..665b3397 100644
--- a/SabreTools.ObjectIdentifier.Test/SabreTools.ObjectIdentifier.Test.csproj
+++ b/SabreTools.ObjectIdentifier.Test/SabreTools.ObjectIdentifier.Test.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0;net11.0</TargetFrameworks>
+        <TargetFrameworks>net10.0;net11.0</TargetFrameworks>
         <IsPackable>false</IsPackable>
         <LangVersion>latest</LangVersion>
         <Nullable>enable</Nullable>
diff --git a/SabreTools.Serialization.CrossModel.Test/SabreTools.Serialization.CrossModel.Test.csproj b/SabreTools.Serialization.CrossModel.Test/SabreTools.Serialization.CrossModel.Test.csproj
index 3349327f..01f151c8 100644
--- a/SabreTools.Serialization.CrossModel.Test/SabreTools.Serialization.CrossModel.Test.csproj
+++ b/SabreTools.Serialization.CrossModel.Test/SabreTools.Serialization.CrossModel.Test.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0;net11.0</TargetFrameworks>
+        <TargetFrameworks>net10.0;net11.0</TargetFrameworks>
         <IsPackable>false</IsPackable>
         <LangVersion>latest</LangVersion>
         <Nullable>enable</Nullable>
diff --git a/SabreTools.Serialization.Readers.Test/SabreTools.Serialization.Readers.Test.csproj b/SabreTools.Serialization.Readers.Test/SabreTools.Serialization.Readers.Test.csproj
index d73385a0..22c09f4f 100644
--- a/SabreTools.Serialization.Readers.Test/SabreTools.Serialization.Readers.Test.csproj
+++ b/SabreTools.Serialization.Readers.Test/SabreTools.Serialization.Readers.Test.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0;net11.0</TargetFrameworks>
+        <TargetFrameworks>net10.0;net11.0</TargetFrameworks>
         <IsPackable>false</IsPackable>
         <LangVersion>latest</LangVersion>
         <Nullable>enable</Nullable>
diff --git a/SabreTools.Serialization.Writers.Test/SabreTools.Serialization.Writers.Test.csproj b/SabreTools.Serialization.Writers.Test/SabreTools.Serialization.Writers.Test.csproj
index ec0f6ae5..70ea1105 100644
--- a/SabreTools.Serialization.Writers.Test/SabreTools.Serialization.Writers.Test.csproj
+++ b/SabreTools.Serialization.Writers.Test/SabreTools.Serialization.Writers.Test.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0;net11.0</TargetFrameworks>
+        <TargetFrameworks>net10.0;net11.0</TargetFrameworks>
         <IsPackable>false</IsPackable>
         <LangVersion>latest</LangVersion>
         <Nullable>enable</Nullable>
diff --git a/SabreTools.Wrappers.Test/SabreTools.Wrappers.Test.csproj b/SabreTools.Wrappers.Test/SabreTools.Wrappers.Test.csproj
index c2a79871..2309a61c 100644
--- a/SabreTools.Wrappers.Test/SabreTools.Wrappers.Test.csproj
+++ b/SabreTools.Wrappers.Test/SabreTools.Wrappers.Test.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0;net11.0</TargetFrameworks>
+        <TargetFrameworks>net10.0;net11.0</TargetFrameworks>
         <IsPackable>false</IsPackable>
         <LangVersion>latest</LangVersion>
         <Nullable>enable</Nullable>