diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index e00757cb7b..745d54447c 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -77,13 +77,19 @@ jobs:
             sdk-preview: true
             runtime: -x64
             codecov: false
+          - os: macos-26
+            framework: net9.0
+            sdk: 9.0.x
+            sdk-preview: true
+            runtime: -x64
+            codecov: false
           - os: windows-latest
             framework: net9.0
             sdk: 9.0.x
             sdk-preview: true
             runtime: -x64
             codecov: false
-          - os: buildjet-4vcpu-ubuntu-2204-arm
+          - os: ubuntu-22.04-arm
             framework: net9.0
             sdk: 9.0.x
             sdk-preview: true
@@ -100,12 +106,17 @@ jobs:
             sdk: 8.0.x
             runtime: -x64
             codecov: false
+          - os: macos-26
+            framework: net8.0
+            sdk: 8.0.x
+            runtime: -x64
+            codecov: false
           - os: windows-latest
             framework: net8.0
             sdk: 8.0.x
             runtime: -x64
             codecov: false
-          - os: buildjet-4vcpu-ubuntu-2204-arm
+          - os: ubuntu-22.04-arm
             framework: net8.0
             sdk: 8.0.x
             runtime: -x64
@@ -124,6 +135,18 @@ jobs:
           sudo apt-get update
           sudo apt-get -y install libgdiplus libgif-dev libglib2.0-dev libcairo2-dev libtiff-dev libexif-dev
 
+      - name: Install libgdi+, which is required for tests running on macos
+        if: ${{ contains(matrix.options.os, 'macos-26') }}
+        run: |
+          brew update
+          brew install mono-libgdiplus
+          # Create symlinks to make libgdiplus discoverable
+          sudo mkdir -p /usr/local/lib
+          sudo ln -sf $(brew --prefix)/lib/libgdiplus.dylib /usr/local/lib/libgdiplus.dylib
+          # Verify installation
+          ls -la $(brew --prefix)/lib/libgdiplus* || echo "libgdiplus not found in brew prefix"
+          ls -la /usr/local/lib/libgdiplus* || echo "libgdiplus not found in /usr/local/lib"
+
       - name: Git Config
         shell: bash
         run: |
@@ -192,7 +215,7 @@ jobs:
         run: ./ci-test.ps1 "${{matrix.options.os}}" "${{matrix.options.framework}}" "${{matrix.options.runtime}}" "${{matrix.options.codecov}}"
         env:
           SIXLABORS_TESTING: True
-          XUNIT_PATH: .\tests\ImageSharp.Tests # Required for xunit
+          XUNIT_PATH: .\tests\ImageSharp.Tests # Required for xunit          
 
       - name: DotNet Test Preview
         if: ${{ matrix.options.sdk-preview == true }}
diff --git a/tests/ImageSharp.Tests/Formats/Tiff/TiffDecoderTests.cs b/tests/ImageSharp.Tests/Formats/Tiff/TiffDecoderTests.cs
index 26dc4f5878..5df730cb1d 100644
--- a/tests/ImageSharp.Tests/Formats/Tiff/TiffDecoderTests.cs
+++ b/tests/ImageSharp.Tests/Formats/Tiff/TiffDecoderTests.cs
@@ -360,7 +360,7 @@ public void TiffDecoder_CanDecode_YccK<TPixel>(TestImageProvider<TPixel> provide
     {
         using Image<TPixel> image = provider.GetImage(TiffDecoder.Instance);
         image.DebugSave(provider);
-        image.CompareToReferenceOutput(ImageComparer.Exact, provider);
+        image.CompareToReferenceOutput(ImageComparer.Tolerant(), provider);
     }
 
     [Theory]
diff --git a/tests/ImageSharp.Tests/TestUtilities/Tests/SystemDrawingReferenceCodecTests.cs b/tests/ImageSharp.Tests/TestUtilities/Tests/SystemDrawingReferenceCodecTests.cs
index 555041890a..40540ec6c7 100644
--- a/tests/ImageSharp.Tests/TestUtilities/Tests/SystemDrawingReferenceCodecTests.cs
+++ b/tests/ImageSharp.Tests/TestUtilities/Tests/SystemDrawingReferenceCodecTests.cs
@@ -59,11 +59,6 @@ private static string SavePng<TPixel>(TestImageProvider<TPixel> provider, PngCol
     public void From32bppArgbSystemDrawingBitmap2<TPixel>(TestImageProvider<TPixel> provider)
         where TPixel : unmanaged, IPixel<TPixel>
     {
-        if (TestEnvironment.IsLinux)
-        {
-            return;
-        }
-
         string path = SavePng(provider, PngColorType.RgbWithAlpha);
 
         using Bitmap sdBitmap = new(path);