diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 29da97ea..d1b76224 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/BinaryObjectScanner.Test/BinaryObjectScanner.Test.csproj b/BinaryObjectScanner.Test/BinaryObjectScanner.Test.csproj
index 0f821d1e..bb21f0c7 100644
--- a/BinaryObjectScanner.Test/BinaryObjectScanner.Test.csproj
+++ b/BinaryObjectScanner.Test/BinaryObjectScanner.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>