diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4198d4b6..5c73489e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,6 +19,11 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
+    - name: Setup .NET 8
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: '8.0.x'
+
     - name: 'WireMock.Net.Tests'
       run: dotnet test './test/WireMock.Net.Tests/WireMock.Net.Tests.csproj' -c Release --framework net8.0
 
@@ -46,11 +51,6 @@ jobs:
       with:
         dotnet-version: '8.0.x'
 
-    - name: Setup .NET 9
-      uses: actions/setup-dotnet@v4
-      with:
-        dotnet-version: '9.0.x'
-
     - name: 'WireMock.Net.Tests'
       run: dotnet test './test/WireMock.Net.Tests/WireMock.Net.Tests.csproj' -c Release --framework net8.0
 
diff --git a/Directory.Build.props b/Directory.Build.props
index 67c02e00..6d2246ff 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -13,7 +13,7 @@
         <RepositoryUrl>https://github.com/wiremock/WireMock.Net</RepositoryUrl>
         <ApplicationIcon>../../resources/WireMock.Net-Logo.ico</ApplicationIcon>
         <PackageReadmeFile>PackageReadme.md</PackageReadmeFile>
-        <LangVersion>13</LangVersion>
+        <LangVersion>12</LangVersion>
         <Nullable>enable</Nullable>
     </PropertyGroup>