diff --git a/ai_ta_backend/filtering_contexts.py b/ai_ta_backend/filtering_contexts.py
index 54b3a864..f8795f0a 100644
--- a/ai_ta_backend/filtering_contexts.py
+++ b/ai_ta_backend/filtering_contexts.py
@@ -40,7 +40,7 @@ def run_context_filtering(contexts, user_query, max_time_before_return=45, max_c
     partial_func1 = partial(filter_context, user_query=user_query, langsmith_prompt_obj=langsmith_prompt_obj)
     partial_func2 = partial(select_context, result=filtered_contexts)
 
-    with ThreadPoolExecutor(max_workers=200) as executor1:
+    with ProcessPoolExecutor(max_workers=200) as executor1:
       results1 = list(executor1.map(partial_func1, contexts))
 
     print(f"⏰ ThreadPool runtime: {(time.monotonic() - start_time):.2f} seconds")