diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 57ae1ea..8e97837 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,7 +17,11 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 9.0.x
+          dotnet-version: |
+            6.x
+            7.x
+            8.x
+            9.x
 
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/Ramstack.Globbing/Internal/PathHelper.cs b/Ramstack.Globbing/Internal/PathHelper.cs
index d0664ab..f318b41 100644
--- a/Ramstack.Globbing/Internal/PathHelper.cs
+++ b/Ramstack.Globbing/Internal/PathHelper.cs
@@ -309,7 +309,7 @@ public PathSegmentIterator(int length) =>
 
             while (_position < _length)
             {
-                if (_mask != 0)
+                if (Avx2.IsSupported && _mask != 0)
                 {
                     var offset = BitOperations.TrailingZeroCount(_mask);
                     _last = _position + (nint)((uint)offset >> 1);
@@ -321,7 +321,7 @@ public PathSegmentIterator(int length) =>
                     return ((int)start, (int)_last);
                 }
 
-                if (_position + Vector256<ushort>.Count <= _length)
+                if (Avx2.IsSupported && _position + Vector256<ushort>.Count <= _length)
                 {
                     var chunk = LoadVector256(ref source, _position);
                     var allowEscapingMask = CreateAllowEscaping256Bitmask(flags);