diff --git a/package.json b/package.json
index 4ac978a..01d35f1 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "qmd": "./qmd"
   },
   "scripts": {
-    "test": "bun test",
+    "test": "bun test --preload ./src/test-preload.ts",
     "qmd": "bun src/qmd.ts",
     "index": "bun src/qmd.ts index",
     "vector": "bun src/qmd.ts vector",
diff --git a/src/test-preload.ts b/src/test-preload.ts
new file mode 100644
index 0000000..afbd81f
--- /dev/null
+++ b/src/test-preload.ts
@@ -0,0 +1,13 @@
+/**
+ * Test preload file to ensure proper cleanup of native resources.
+ *
+ * Uses bun:test afterAll to properly dispose of llama.cpp Metal
+ * resources before the process exits, avoiding GGML_ASSERT failures.
+ */
+import { afterAll } from "bun:test";
+import { disposeDefaultLlamaCpp } from "./llm";
+
+// Global afterAll runs after all test files complete
+afterAll(async () => {
+  await disposeDefaultLlamaCpp();
+});