diff --git a/LLama.Unittest/AssemblyAttributes.cs b/LLama.Unittest/AssemblyAttributes.cs
new file mode 100644
index 00000000..346e4a08
--- /dev/null
+++ b/LLama.Unittest/AssemblyAttributes.cs
@@ -0,0 +1,5 @@
+
+// Disable running tests in parallel. Some tests load language models and try to and
+// this can cause a lockup due to memory thrashing and terrible performance.
+// e.g. 7GB model loaded by 10 different tests and trying to evaluate prompts
+[assembly: CollectionBehavior(DisableTestParallelization = true)]