diff --git a/backend/run_evals.py b/backend/run_evals.py
index 75e76eb..a5cfefb 100644
--- a/backend/run_evals.py
+++ b/backend/run_evals.py
@@ -11,6 +11,8 @@ from evals.config import EVALS_DIR
 from evals.core import generate_code_core
 from evals.utils import image_to_data_url
 
+STACK = "html_tailwind"
+
 
 async def main():
     INPUT_DIR = EVALS_DIR + "/inputs"
@@ -23,7 +25,7 @@ async def main():
     for filename in evals:
         filepath = os.path.join(INPUT_DIR, filename)
         data_url = await image_to_data_url(filepath)
-        task = generate_code_core(data_url, "html_tailwind")
+        task = generate_code_core(data_url, STACK)
         tasks.append(task)
 
     results = await asyncio.gather(*tasks)