diff --git a/python/sglang/test/runners.py b/python/sglang/test/runners.py
index b462e3f72..92cb07384 100644
--- a/python/sglang/test/runners.py
+++ b/python/sglang/test/runners.py
@@ -423,6 +423,10 @@ class HFRunner:
                     )
                 del input_logits
 
+        if lora_paths is not None and lora_paths[i] is not None:
+            # Unload the LoRA adapter if it is used
+            model.unload()
+
         return ModelOutput(
             output_strs=output_strs,
             top_input_logprobs=top_input_logprobs,